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83874497 = 711982071
BaseRepresentation
bin1001111111111…
…01001011000001
312211211021011212
410333331023001
5132432440442
612153415505
72035631030
oct477751301
9184737155
1083874497
1143388173
122410a595
13144b8aa5
14b1d4717
15756ba82
hex4ffd2c1

83874497 has 4 divisors (see below), whose sum is σ = 95856576. Its totient is φ = 71892420.

The previous prime is 83874487. The next prime is 83874503. The reversal of 83874497 is 79447838.

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: 79447838 = 239723919.

It is a cyclic number.

It is not a de Polignac number, because 83874497 - 26 = 83874433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83874487) 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, 5991029 + ... + 5991042.

It is an arithmetic number, because the mean of its divisors is an integer number (23964144).

Almost surely, 283874497 is an apocalyptic number.

It is an amenable number.

83874497 is a deficient number, since it is larger than the sum of its proper divisors (11982079).

83874497 is a wasteful number, since it uses less digits than its factorization.

83874497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11982078.

The product of its digits is 1354752, while the sum is 50.

The square root of 83874497 is about 9158.3020806261. The cubic root of 83874497 is about 437.7336930541.

The spelling of 83874497 in words is "eighty-three million, eight hundred seventy-four thousand, four hundred ninety-seven".

Divisors: 1 7 11982071 83874497