139464860 has 24 divisors (see below), whose sum is σ = 293528256. Its totient is φ = 55661760.

The previous prime is 139464859. The next prime is 139464863. The reversal of 139464860 is 68464931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139464863) 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, 1730 + ... + 16790.

It is an arithmetic number, because the mean of its divisors is an integer number (12230344).

Almost surely, 2^139464860 is an apocalyptic number.

139464860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139464860 is an abundant number, since it is smaller than the sum of its proper divisors (154063396).

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

139464860 is a wasteful number, since it uses less digits than its factorization.

139464860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15533 (or 15531 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 139464860 is about 11809.5241225038. The cubic root of 139464860 is about 518.5869674931.

The spelling of 139464860 in words is "one hundred thirty-nine million, four hundred sixty-four thousand, eight hundred sixty".