139474920 has 128 divisors (see below), whose sum is σ = 466300800. Its totient is φ = 33137664.

The previous prime is 139474873. The next prime is 139474931. The reversal of 139474920 is 29474931.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43699 + ... + 46781.

It is an arithmetic number, because the mean of its divisors is an integer number (3642975).

Almost surely, 2^139474920 is an apocalyptic number.

139474920 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 139474920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233150400).

139474920 is an abundant number, since it is smaller than the sum of its proper divisors (326825880).

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

139474920 is a wasteful number, since it uses less digits than its factorization.

139474920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3139 (or 3135 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 139474920 is about 11809.9500422313. The cubic root of 139474920 is about 518.5994362480.

The spelling of 139474920 in words is "one hundred thirty-nine million, four hundred seventy-four thousand, nine hundred twenty".