139418000 has 40 divisors (see below), whose sum is σ = 337117560. Its totient is φ = 55766400.

The previous prime is 139417987. The next prime is 139418011. The reversal of 139418000 is 814931.

It can be written as a sum of positive squares in 4 ways, for example, as 39337984 + 100080016 = 6272^2 + 10004^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32855 + ... + 36854.

It is an arithmetic number, because the mean of its divisors is an integer number (8427939).

Almost surely, 2^139418000 is an apocalyptic number.

139418000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139418000 is an abundant number, since it is smaller than the sum of its proper divisors (197699560).

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

139418000 is an equidigital number, since it uses as much as digits as its factorization.

139418000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69732 (or 69716 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 139418000 is about 11807.5399639383. The cubic root of 139418000 is about 518.5288794856.

The spelling of 139418000 in words is "one hundred thirty-nine million, four hundred eighteen thousand".