139774697 has 16 divisors (see below), whose sum is σ = 156260160. Its totient is φ = 124250112.

The previous prime is 139774681. The next prime is 139774709. The reversal of 139774697 is 796477931.

It is a cyclic number.

It is not a de Polignac number, because 139774697 - 2⁴ = 139774681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139774627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207353 + ... + 208025.

It is an arithmetic number, because the mean of its divisors is an integer number (9766260).

Almost surely, 2^139774697 is an apocalyptic number.

139774697 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

139774697 is a deficient number, since it is larger than the sum of its proper divisors (16485463).

139774697 is a wasteful number, since it uses less digits than its factorization.

139774697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1352.

The product of its digits is 2000376, while the sum is 53.

The square root of 139774697 is about 11822.6349431927. The cubic root of 139774697 is about 518.9707167022.

The spelling of 139774697 in words is "one hundred thirty-nine million, seven hundred seventy-four thousand, six hundred ninety-seven".