149417931 has 16 divisors (see below), whose sum is σ = 215016704. Its totient is φ = 91749024.

The previous prime is 149417929. The next prime is 149417941. The reversal of 149417931 is 139714941.

It is not a de Polignac number, because 149417931 - 2¹ = 149417929 is a prime.

It is a super-2 number, since 2×149417931² = 44651436208641522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

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 149417931.

It is not an unprimeable number, because it can be changed into a prime (149417921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15060 + ... + 22926.

It is an arithmetic number, because the mean of its divisors is an integer number (13438544).

Almost surely, 2^149417931 is an apocalyptic number.

149417931 is a deficient number, since it is larger than the sum of its proper divisors (65598773).

149417931 is a wasteful number, since it uses less digits than its factorization.

149417931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8370.

The product of its digits is 27216, while the sum is 39.

The square root of 149417931 is about 12223.6627489472. The cubic root of 149417931 is about 530.6411263535.

The spelling of 149417931 in words is "one hundred forty-nine million, four hundred seventeen thousand, nine hundred thirty-one".