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392993 = 1632411
BaseRepresentation
bin1011111111100100001
3201222002022
41133330201
5100033433
612231225
73224516
oct1377441
9658068
10392993
11249297
1216b515
13109b53
14a330d
157b698
hex5ff21

392993 has 4 divisors (see below), whose sum is σ = 395568. Its totient is φ = 390420.

The previous prime is 392983. The next prime is 393007. The reversal of 392993 is 399293.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 399293 = 2271759.

It is a cyclic number.

It is not a de Polignac number, because 392993 - 26 = 392929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (392923) 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, 1043 + ... + 1368.

It is an arithmetic number, because the mean of its divisors is an integer number (98892).

2392993 is an apocalyptic number.

It is an amenable number.

392993 is a deficient number, since it is larger than the sum of its proper divisors (2575).

392993 is a wasteful number, since it uses less digits than its factorization.

392993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2574.

The product of its digits is 13122, while the sum is 35.

The square root of 392993 is about 626.8915376682. The cubic root of 392993 is about 73.2478595514.

The spelling of 392993 in words is "three hundred ninety-two thousand, nine hundred ninety-three".

Divisors: 1 163 2411 392993