149108639 has 8 divisors (see below), whose sum is σ = 150239232. Its totient is φ = 147982840.

The previous prime is 149108627. The next prime is 149108647. The reversal of 149108639 is 936801941.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 149108639 - 2⁸ = 149108383 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 149108596 and 149108605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149108699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80882 + ... + 82704.

It is an arithmetic number, because the mean of its divisors is an integer number (18779904).

Almost surely, 2^149108639 is an apocalyptic number.

149108639 is a deficient number, since it is larger than the sum of its proper divisors (1130593).

149108639 is a wasteful number, since it uses less digits than its factorization.

149108639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2397.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 149108639 is about 12211.0048317082. The cubic root of 149108639 is about 530.2747347423.

The spelling of 149108639 in words is "one hundred forty-nine million, one hundred eight thousand, six hundred thirty-nine".