149642279 has 16 divisors (see below), whose sum is σ = 162946080. Its totient is φ = 136872960.

The previous prime is 149642263. The next prime is 149642287. The reversal of 149642279 is 972246941.

It is a cyclic number.

It is not a de Polignac number, because 149642279 - 2⁴ = 149642263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149642179) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196259 + ... + 197019.

It is an arithmetic number, because the mean of its divisors is an integer number (10184130).

Almost surely, 2^149642279 is an apocalyptic number.

149642279 is a deficient number, since it is larger than the sum of its proper divisors (13303801).

149642279 is a wasteful number, since it uses less digits than its factorization.

149642279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090.

The product of its digits is 217728, while the sum is 44.

The square root of 149642279 is about 12232.8360979783. The cubic root of 149642279 is about 530.9065758468.

The spelling of 149642279 in words is "one hundred forty-nine million, six hundred forty-two thousand, two hundred seventy-nine".