139902336 has 128 divisors (see below), whose sum is σ = 471974400. Its totient is φ = 39965184.

The previous prime is 139902317. The next prime is 139902379. The reversal of 139902336 is 633209931.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 139902336.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21301 + ... + 27083.

It is an arithmetic number, because the mean of its divisors is an integer number (3687300).

Almost surely, 2^139902336 is an apocalyptic number.

139902336 is a gapful number since it is divisible by the number (16) 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 139902336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235987200).

139902336 is an abundant number, since it is smaller than the sum of its proper divisors (332072064).

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

139902336 is an equidigital number, since it uses as much as digits as its factorization.

139902336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5813 (or 5795 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 36.

The square root of 139902336 is about 11828.0317889326. The cubic root of 139902336 is about 519.1286393013.

The spelling of 139902336 in words is "one hundred thirty-nine million, nine hundred two thousand, three hundred thirty-six".