149625839 has 4 divisors (see below), whose sum is σ = 163228200. Its totient is φ = 136023480.

The previous prime is 149625803. The next prime is 149625859. The reversal of 149625839 is 938526941.

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 149625839 - 2¹⁶ = 149560303 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 149625793 and 149625802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149625859) 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, 6801164 + ... + 6801185.

It is an arithmetic number, because the mean of its divisors is an integer number (40807050).

Almost surely, 2^149625839 is an apocalyptic number.

149625839 is a deficient number, since it is larger than the sum of its proper divisors (13602361).

149625839 is a wasteful number, since it uses less digits than its factorization.

149625839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13602360.

The product of its digits is 466560, while the sum is 47.

The square root of 149625839 is about 12232.1641176040. The cubic root of 149625839 is about 530.8871329821.

The spelling of 149625839 in words is "one hundred forty-nine million, six hundred twenty-five thousand, eight hundred thirty-nine".