149868877 has 2 divisors, whose sum is σ = 149868878. Its totient is φ = 149868876.

The previous prime is 149868857. The next prime is 149868919. The reversal of 149868877 is 778868941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115047076 + 34821801 = 10726^2 + 5901^2 .

It is a cyclic number.

It is not a de Polignac number, because 149868877 - 2²⁷ = 15651149 is a prime.

It is a super-2 number, since 2×149868877² = 44921360586482258, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149868857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74934438 + 74934439.

It is an arithmetic number, because the mean of its divisors is an integer number (74934439).

Almost surely, 2^149868877 is an apocalyptic number.

It is an amenable number.

149868877 is a deficient number, since it is larger than the sum of its proper divisors (1).

149868877 is an equidigital number, since it uses as much as digits as its factorization.

149868877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5419008, while the sum is 58.

The square root of 149868877 is about 12242.0944694934. The cubic root of 149868877 is about 531.1744183685.

The spelling of 149868877 in words is "one hundred forty-nine million, eight hundred sixty-eight thousand, eight hundred seventy-seven".