139730651 has 4 divisors (see below), whose sum is σ = 139828272. Its totient is φ = 139633032.

The previous prime is 139730641. The next prime is 139730653. The reversal of 139730651 is 156037931.

139730651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 139730651 - 2⁶ = 139730587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139730653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46631 + ... + 49536.

It is an arithmetic number, because the mean of its divisors is an integer number (34957068).

Almost surely, 2^139730651 is an apocalyptic number.

139730651 is a deficient number, since it is larger than the sum of its proper divisors (97621).

139730651 is an equidigital number, since it uses as much as digits as its factorization.

139730651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97620.

The product of its (nonzero) digits is 17010, while the sum is 35.

The square root of 139730651 is about 11820.7720137054. The cubic root of 139730651 is about 518.9161980467.

The spelling of 139730651 in words is "one hundred thirty-nine million, seven hundred thirty thousand, six hundred fifty-one".