149277931 has 4 divisors (see below), whose sum is σ = 162848664. Its totient is φ = 135707200.

The previous prime is 149277929. The next prime is 149277967. The reversal of 149277931 is 139772941.

It is a happy number.

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 149277931 - 2¹ = 149277929 is a prime.

It is a super-2 number, since 2×149277931² = 44567801367281522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (149277971) 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, 6785350 + ... + 6785371.

It is an arithmetic number, because the mean of its divisors is an integer number (40712166).

Almost surely, 2^149277931 is an apocalyptic number.

149277931 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

149277931 is a deficient number, since it is larger than the sum of its proper divisors (13570733).

149277931 is a wasteful number, since it uses less digits than its factorization.

149277931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13570732.

The product of its digits is 95256, while the sum is 43.

The square root of 149277931 is about 12217.9348091238. The cubic root of 149277931 is about 530.4753431000.

The spelling of 149277931 in words is "one hundred forty-nine million, two hundred seventy-seven thousand, nine hundred thirty-one".