139956380 has 24 divisors (see below), whose sum is σ = 306688032. Its totient is φ = 53548352.

The previous prime is 139956371. The next prime is 139956389. The reversal of 139956380 is 83659931.

It is an interprime number because it is at equal distance from previous prime (139956371) and next prime (139956389).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139956389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151667 + ... + 152586.

It is an arithmetic number, because the mean of its divisors is an integer number (12778668).

Almost surely, 2^139956380 is an apocalyptic number.

139956380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139956380 is an abundant number, since it is smaller than the sum of its proper divisors (166731652).

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

139956380 is a wasteful number, since it uses less digits than its factorization.

139956380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304285 (or 304283 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 44.

The square root of 139956380 is about 11830.3161411688. The cubic root of 139956380 is about 519.1954768232.

The spelling of 139956380 in words is "one hundred thirty-nine million, nine hundred fifty-six thousand, three hundred eighty".