149952791 has 4 divisors (see below), whose sum is σ = 150165000. Its totient is φ = 149740584.

The previous prime is 149952779. The next prime is 149952793. The reversal of 149952791 is 197259941.

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 149952791 - 2⁶ = 149952727 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 (149952793) 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, 105041 + ... + 106458.

It is an arithmetic number, because the mean of its divisors is an integer number (37541250).

Almost surely, 2^149952791 is an apocalyptic number.

149952791 is a deficient number, since it is larger than the sum of its proper divisors (212209).

149952791 is an equidigital number, since it uses as much as digits as its factorization.

149952791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212208.

The product of its digits is 204120, while the sum is 47.

The square root of 149952791 is about 12245.5212628944. The cubic root of 149952791 is about 531.2735375777.

The spelling of 149952791 in words is "one hundred forty-nine million, nine hundred fifty-two thousand, seven hundred ninety-one".