139314840 has 384 divisors, whose sum is σ = 541728000. Its totient is φ = 28449792.

The previous prime is 139314839. The next prime is 139314853. The reversal of 139314840 is 48413931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3239859 + ... + 3239901.

It is an arithmetic number, because the mean of its divisors is an integer number (1410750).

Almost surely, 2^139314840 is an apocalyptic number.

139314840 is a gapful number since it is divisible by the number (10) 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 139314840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270864000).

139314840 is an abundant number, since it is smaller than the sum of its proper divisors (402413160).

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

139314840 is a wasteful number, since it uses less digits than its factorization.

139314840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 139314840 is about 11803.1707604355. The cubic root of 139314840 is about 518.4009556929.

Subtracting from 139314840 its reverse (48413931), we obtain a palindrome (90900909).

The spelling of 139314840 in words is "one hundred thirty-nine million, three hundred fourteen thousand, eight hundred forty".