139086996 has 48 divisors (see below), whose sum is σ = 352933056. Its totient is φ = 42453504.

The previous prime is 139086991. The next prime is 139087007. The reversal of 139086996 is 699680931.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139086991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1666 + ... + 16761.

It is an arithmetic number, because the mean of its divisors is an integer number (7352772).

Almost surely, 2^139086996 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 139086996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176466528).

139086996 is an abundant number, since it is smaller than the sum of its proper divisors (213846060).

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

139086996 is a wasteful number, since it uses less digits than its factorization.

139086996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18488 (or 18486 counting only the distinct ones).

The product of its (nonzero) digits is 629856, while the sum is 51.

The square root of 139086996 is about 11793.5149976587. The cubic root of 139086996 is about 518.1181932906.

The spelling of 139086996 in words is "one hundred thirty-nine million, eighty-six thousand, nine hundred ninety-six".