83139037 has 6 divisors (see below), whose sum is σ = 85443038. Its totient is φ = 80838072.

The previous prime is 83139029. The next prime is 83139071. The reversal of 83139037 is 73093138.

It can be written as a sum of positive squares in only one way, i.e., 80892036 + 2247001 = 8994^2 + 1499^2 .

It is not a de Polignac number, because 83139037 - 2³ = 83139029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83138993 and 83139011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83137037) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54714 + ... + 56212.

Almost surely, 2^83139037 is an apocalyptic number.

It is an amenable number.

83139037 is a deficient number, since it is larger than the sum of its proper divisors (2304001).

83139037 is an frugal number, since it uses more digits than its factorization.

83139037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3035 (or 1536 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 83139037 is about 9118.0610329170. The cubic root of 83139037 is about 436.4505012348.

The spelling of 83139037 in words is "eighty-three million, one hundred thirty-nine thousand, thirty-seven".