149959791 has 12 divisors (see below), whose sum is σ = 221646568. Its totient is φ = 97647984.

The previous prime is 149959781. The next prime is 149959811. The reversal of 149959791 is 197959941.

149959791 is a `hidden beast` number, since 1 + 49 + 9 + 597 + 9 + 1 = 666.

149959791 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 149959791 - 2⁵ = 149959759 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 (149959781) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 193360 + ... + 194133.

Almost surely, 2^149959791 is an apocalyptic number.

149959791 is a deficient number, since it is larger than the sum of its proper divisors (71686777).

149959791 is a wasteful number, since it uses less digits than its factorization.

149959791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387542 (or 387539 counting only the distinct ones).

The product of its digits is 918540, while the sum is 54.

The square root of 149959791 is about 12245.8070783432. The cubic root of 149959791 is about 531.2818043059.

The spelling of 149959791 in words is "one hundred forty-nine million, nine hundred fifty-nine thousand, seven hundred ninety-one".