149239199 has 4 divisors (see below), whose sum is σ = 149380920. Its totient is φ = 149097480.

The previous prime is 149239193. The next prime is 149239219. The reversal of 149239199 is 991932941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 991932941 = 4423 ⋅224267.

It is a cyclic number.

It is not a de Polignac number, because 149239199 - 2¹² = 149235103 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 (149239193) 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, 69269 + ... + 71390.

It is an arithmetic number, because the mean of its divisors is an integer number (37345230).

Almost surely, 2^149239199 is an apocalyptic number.

149239199 is a deficient number, since it is larger than the sum of its proper divisors (141721).

149239199 is a wasteful number, since it uses less digits than its factorization.

149239199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141720.

The product of its digits is 157464, while the sum is 47.

The square root of 149239199 is about 12216.3496593704. The cubic root of 149239199 is about 530.4294596751.

The spelling of 149239199 in words is "one hundred forty-nine million, two hundred thirty-nine thousand, one hundred ninety-nine".