139215039 has 8 divisors (see below), whose sum is σ = 185931312. Its totient is φ = 92654400.

The previous prime is 139215031. The next prime is 139215059. The reversal of 139215039 is 930512931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 139215039 - 2³ = 139215031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139215031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36804 + ... + 40409.

It is an arithmetic number, because the mean of its divisors is an integer number (23241414).

Almost surely, 2^139215039 is an apocalyptic number.

139215039 is a deficient number, since it is larger than the sum of its proper divisors (46716273).

139215039 is an equidigital number, since it uses as much as digits as its factorization.

139215039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77817.

The product of its (nonzero) digits is 7290, while the sum is 33.

The square root of 139215039 is about 11798.9422831032. The cubic root of 139215039 is about 518.2771371225.

The spelling of 139215039 in words is "one hundred thirty-nine million, two hundred fifteen thousand, thirty-nine".