139774745 has 16 divisors (see below), whose sum is σ = 184154688. Its totient is φ = 101000640.

The previous prime is 139774721. The next prime is 139774763. The reversal of 139774745 is 547477931.

It is not a de Polignac number, because 139774745 - 2⁶ = 139774681 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 139774745.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 542 + ... + 16728.

It is an arithmetic number, because the mean of its divisors is an integer number (11509668).

Almost surely, 2^139774745 is an apocalyptic number.

It is an amenable number.

139774745 is a deficient number, since it is larger than the sum of its proper divisors (44379943).

139774745 is a wasteful number, since it uses less digits than its factorization.

139774745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16360.

The product of its digits is 740880, while the sum is 47.

The square root of 139774745 is about 11822.6369731968. The cubic root of 139774745 is about 518.9707761088.

The spelling of 139774745 in words is "one hundred thirty-nine million, seven hundred seventy-four thousand, seven hundred forty-five".