139001536 has 14 divisors (see below), whose sum is σ = 275831300. Its totient is φ = 69500736.

The previous prime is 139001531. The next prime is 139001539. The reversal of 139001536 is 635100931.

It is not an unprimeable number, because it can be changed into a prime (139001531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1085886 + ... + 1086013.

Almost surely, 2^139001536 is an apocalyptic number.

139001536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

139001536 is a deficient number, since it is larger than the sum of its proper divisors (136829764).

139001536 is an equidigital number, since it uses as much as digits as its factorization.

139001536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2171911 (or 2171901 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 28.

The square root of 139001536 is about 11789.8912632814. The cubic root of 139001536 is about 518.0120547972.

The spelling of 139001536 in words is "one hundred thirty-nine million, one thousand, five hundred thirty-six".