149772199 has 4 divisors (see below), whose sum is σ = 149805720. Its totient is φ = 149738680.

The previous prime is 149772151. The next prime is 149772209. The reversal of 149772199 is 991277941.

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 149772199 - 2¹⁵ = 149739431 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 (149772109) 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 3 ways as a sum of consecutive naturals, for example, 8797 + ... + 19414.

It is an arithmetic number, because the mean of its divisors is an integer number (37451430).

Almost surely, 2^149772199 is an apocalyptic number.

149772199 is a deficient number, since it is larger than the sum of its proper divisors (33521).

149772199 is an equidigital number, since it uses as much as digits as its factorization.

149772199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33520.

The product of its digits is 285768, while the sum is 49.

The square root of 149772199 is about 12238.1452434591. The cubic root of 149772199 is about 531.0601764443.

The spelling of 149772199 in words is "one hundred forty-nine million, seven hundred seventy-two thousand, one hundred ninety-nine".