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379137893 = 1722302229
BaseRepresentation
bin10110100110010…
…010111101100101
3222102102012102012
4112212102331211
51234024403033
6101342124005
712252422201
oct2646227545
9872365365
10379137893
11185016a02
12a6b80605
1360718964
14384d3b01
1523442248
hex16992f65

379137893 has 4 divisors (see below), whose sum is σ = 401440140. Its totient is φ = 356835648.

The previous prime is 379137823. The next prime is 379137901. The reversal of 379137893 is 398731973.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 398731973 = 478483659.

It can be written as a sum of positive squares in 2 ways, for example, as 304781764 + 74356129 = 17458^2 + 8623^2 .

It is a cyclic number.

It is not a de Polignac number, because 379137893 - 28 = 379137637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (379137823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11151098 + ... + 11151131.

It is an arithmetic number, because the mean of its divisors is an integer number (100360035).

Almost surely, 2379137893 is an apocalyptic number.

It is an amenable number.

379137893 is a deficient number, since it is larger than the sum of its proper divisors (22302247).

379137893 is a wasteful number, since it uses less digits than its factorization.

379137893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22302246.

The product of its digits is 857304, while the sum is 50.

The square root of 379137893 is about 19471.4635556755. The cubic root of 379137893 is about 723.7674773228.

The spelling of 379137893 in words is "three hundred seventy-nine million, one hundred thirty-seven thousand, eight hundred ninety-three".

Divisors: 1 17 22302229 379137893