149679199 has 2 divisors, whose sum is σ = 149679200. Its totient is φ = 149679198.

The previous prime is 149679181. The next prime is 149679223. The reversal of 149679199 is 991976941.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 149679199 - 2¹⁹ = 149154911 is a prime.

It is a super-2 number, since 2×149679199² = 44807725226563202, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149679149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74839599 + 74839600.

It is an arithmetic number, because the mean of its divisors is an integer number (74839600).

Almost surely, 2^149679199 is an apocalyptic number.

149679199 is a deficient number, since it is larger than the sum of its proper divisors (1).

149679199 is an equidigital number, since it uses as much as digits as its factorization.

149679199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1102248, while the sum is 55.

The square root of 149679199 is about 12234.3450580732. The cubic root of 149679199 is about 530.9502343171.

It can be divided in two parts, 149679 and 199, that added together give a triangular number (149878 = T₅₄₇).

The spelling of 149679199 in words is "one hundred forty-nine million, six hundred seventy-nine thousand, one hundred ninety-nine".