139904260 has 24 divisors (see below), whose sum is σ = 297521280. Its totient is φ = 55252704.

The previous prime is 139904257. The next prime is 139904267. The reversal of 139904260 is 62409931.

It is a super-2 number, since 2×139904260² = 39146403932295200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (139904267) 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, 42694 + ... + 45853.

It is an arithmetic number, because the mean of its divisors is an integer number (12396720).

Almost surely, 2^139904260 is an apocalyptic number.

139904260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139904260 is an abundant number, since it is smaller than the sum of its proper divisors (157617020).

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

139904260 is a wasteful number, since it uses less digits than its factorization.

139904260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88635 (or 88633 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 139904260 is about 11828.1131208659. The cubic root of 139904260 is about 519.1310190541.

The spelling of 139904260 in words is "one hundred thirty-nine million, nine hundred four thousand, two hundred sixty".