83438577 has 12 divisors (see below), whose sum is σ = 124410624. Its totient is φ = 53831160.

The previous prime is 83438573. The next prime is 83438587. The reversal of 83438577 is 77583438.

It is not a de Polignac number, because 83438577 - 2² = 83438573 is a prime.

It is a super-2 number, since 2×83438577² = 13923992263569858, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (83438573) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 149253 + ... + 149810.

It is an arithmetic number, because the mean of its divisors is an integer number (10367552).

Almost surely, 2^83438577 is an apocalyptic number.

It is an amenable number.

83438577 is a deficient number, since it is larger than the sum of its proper divisors (40972047).

83438577 is a wasteful number, since it uses less digits than its factorization.

83438577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299100 (or 299097 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The square root of 83438577 is about 9134.4719059177. The cubic root of 83438577 is about 436.9740326371.

The spelling of 83438577 in words is "eighty-three million, four hundred thirty-eight thousand, five hundred seventy-seven".