139837404 has 96 divisors (see below), whose sum is σ = 390168576. Its totient is φ = 38139840.

The previous prime is 139837381. The next prime is 139837409. The reversal of 139837404 is 404738931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139837409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 215809 + ... + 216455.

It is an arithmetic number, because the mean of its divisors is an integer number (4064256).

Almost surely, 2^139837404 is an apocalyptic number.

139837404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139837404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195084288).

139837404 is an abundant number, since it is smaller than the sum of its proper divisors (250331172).

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

139837404 is a wasteful number, since it uses less digits than its factorization.

139837404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775 (or 773 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 139837404 is about 11825.2866350038. The cubic root of 139837404 is about 519.0483135588.

The spelling of 139837404 in words is "one hundred thirty-nine million, eight hundred thirty-seven thousand, four hundred four".