139757601 has 4 divisors (see below), whose sum is σ = 186343472. Its totient is φ = 93171732.

The previous prime is 139757593. The next prime is 139757617. The reversal of 139757601 is 106757931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 139757601 - 2³ = 139757593 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 139757601.

It is not an unprimeable number, because it can be changed into a prime (139757671) 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, 23292931 + ... + 23292936.

It is an arithmetic number, because the mean of its divisors is an integer number (46585868).

Almost surely, 2^139757601 is an apocalyptic number.

It is an amenable number.

139757601 is a deficient number, since it is larger than the sum of its proper divisors (46585871).

139757601 is an equidigital number, since it uses as much as digits as its factorization.

139757601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46585870.

The product of its (nonzero) digits is 39690, while the sum is 39.

The square root of 139757601 is about 11821.9119012112. The cubic root of 139757601 is about 518.9495572093.

The spelling of 139757601 in words is "one hundred thirty-nine million, seven hundred fifty-seven thousand, six hundred one".