139037976 has 192 divisors, whose sum is σ = 485222400. Its totient is φ = 34905600.

The previous prime is 139037933. The next prime is 139037989. The reversal of 139037976 is 679730931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 171460 + ... + 172268.

It is an arithmetic number, because the mean of its divisors is an integer number (2527200).

Almost surely, 2^139037976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139037976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242611200).

139037976 is an abundant number, since it is smaller than the sum of its proper divisors (346184424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139037976 is a wasteful number, since it uses less digits than its factorization.

139037976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870 (or 863 counting only the distinct ones).

The product of its (nonzero) digits is 214326, while the sum is 45.

The square root of 139037976 is about 11791.4365537029. The cubic root of 139037976 is about 518.0573173905.

The spelling of 139037976 in words is "one hundred thirty-nine million, thirty-seven thousand, nine hundred seventy-six".