149138279 has 16 divisors (see below), whose sum is σ = 161300160. Its totient is φ = 137533440.

The previous prime is 149138273. The next prime is 149138281. The reversal of 149138279 is 972831941.

It is a cyclic number.

It is not a de Polignac number, because 149138279 - 2⁸ = 149138023 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 (149138273) 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, 83039 + ... + 84815.

It is an arithmetic number, because the mean of its divisors is an integer number (10081260).

Almost surely, 2^149138279 is an apocalyptic number.

149138279 is a deficient number, since it is larger than the sum of its proper divisors (12161881).

149138279 is a wasteful number, since it uses less digits than its factorization.

149138279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1930.

The product of its digits is 108864, while the sum is 44.

The square root of 149138279 is about 12212.2184307357. The cubic root of 149138279 is about 530.3098686374.

The spelling of 149138279 in words is "one hundred forty-nine million, one hundred thirty-eight thousand, two hundred seventy-nine".