139650639 has 8 divisors (see below), whose sum is σ = 186576000. Its totient is φ = 92912856.

The previous prime is 139650619. The next prime is 139650649. The reversal of 139650639 is 936056931.

139650639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 139650639 - 2⁵ = 139650607 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 139650639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139650619) 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, 45147 + ... + 48140.

It is an arithmetic number, because the mean of its divisors is an integer number (23322000).

Almost surely, 2^139650639 is an apocalyptic number.

139650639 is a deficient number, since it is larger than the sum of its proper divisors (46925361).

139650639 is an equidigital number, since it uses as much as digits as its factorization.

139650639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93789.

The product of its (nonzero) digits is 131220, while the sum is 42.

The square root of 139650639 is about 11817.3871477582. The cubic root of 139650639 is about 518.8171325709.

The spelling of 139650639 in words is "one hundred thirty-nine million, six hundred fifty thousand, six hundred thirty-nine".