139381500 has 48 divisors (see below), whose sum is σ = 405883296. Its totient is φ = 37168000.

The previous prime is 139381499. The next prime is 139381513. The reversal of 139381500 is 5183931.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 44961 + ... + 47960.

It is an arithmetic number, because the mean of its divisors is an integer number (8455902).

Almost surely, 2^139381500 is an apocalyptic number.

139381500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139381500 is an abundant number, since it is smaller than the sum of its proper divisors (266501796).

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

139381500 is a wasteful number, since it uses less digits than its factorization.

139381500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92943 (or 92931 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 139381500 is about 11805.9942402154. The cubic root of 139381500 is about 518.4836247935.

The spelling of 139381500 in words is "one hundred thirty-nine million, three hundred eighty-one thousand, five hundred".