139481460 has 48 divisors (see below), whose sum is σ = 433944000. Its totient is φ = 37194912.

The previous prime is 139481449. The next prime is 139481473. The reversal of 139481460 is 64184931.

139481460 is a `hidden beast` number, since 139 + 481 + 46 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128610 + ... + 129689.

It is an arithmetic number, because the mean of its divisors is an integer number (9040500).

Almost surely, 2^139481460 is an apocalyptic number.

139481460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139481460 is an abundant number, since it is smaller than the sum of its proper divisors (294462540).

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

139481460 is a wasteful number, since it uses less digits than its factorization.

139481460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258317 (or 258309 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 139481460 is about 11810.2269241535. The cubic root of 139481460 is about 518.6075418565.

The spelling of 139481460 in words is "one hundred thirty-nine million, four hundred eighty-one thousand, four hundred sixty".