149243679 has 24 divisors (see below), whose sum is σ = 232744512. Its totient is φ = 91609920.

The previous prime is 149243623. The next prime is 149243683. The reversal of 149243679 is 976342941.

It is a happy number.

149243679 is a `hidden beast` number, since 149 + 2 + 436 + 79 = 666.

It is not a de Polignac number, because 149243679 - 2¹³ = 149235487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149243179) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52554 + ... + 55320.

It is an arithmetic number, because the mean of its divisors is an integer number (9697688).

Almost surely, 2^149243679 is an apocalyptic number.

149243679 is a deficient number, since it is larger than the sum of its proper divisors (83500833).

149243679 is a wasteful number, since it uses less digits than its factorization.

149243679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3247 (or 3244 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 149243679 is about 12216.5330188233. The cubic root of 149243679 is about 530.4347672623.

The spelling of 149243679 in words is "one hundred forty-nine million, two hundred forty-three thousand, six hundred seventy-nine".