139398336 has 252 divisors, whose sum is σ = 508177800. Its totient is φ = 36126720.

The previous prime is 139398323. The next prime is 139398341. The reversal of 139398336 is 633893931.

It is a tau number, because it is divible by the number of its divisors (252).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 139398291 and 139398300.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 310240 + ... + 310688.

Almost surely, 2^139398336 is an apocalyptic number.

139398336 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 139398336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254088900).

139398336 is an abundant number, since it is smaller than the sum of its proper divisors (368779464).

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

139398336 is a wasteful number, since it uses less digits than its factorization.

139398336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492 (or 472 counting only the distinct ones).

The product of its digits is 314928, while the sum is 45.

The square root of 139398336 is about 11806.7072463071. The cubic root of 139398336 is about 518.5044999667.

The spelling of 139398336 in words is "one hundred thirty-nine million, three hundred ninety-eight thousand, three hundred thirty-six".