149905977 has 8 divisors (see below), whose sum is σ = 215249664. Its totient is φ = 92249808.

The previous prime is 149905969. The next prime is 149905979. The reversal of 149905977 is 779509941.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 149905977 - 2³ = 149905969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149905979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1921833 + ... + 1921910.

It is an arithmetic number, because the mean of its divisors is an integer number (26906208).

Almost surely, 2^149905977 is an apocalyptic number.

It is an amenable number.

149905977 is a deficient number, since it is larger than the sum of its proper divisors (65343687).

149905977 is a wasteful number, since it uses less digits than its factorization.

149905977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3843759.

The product of its (nonzero) digits is 714420, while the sum is 51.

The square root of 149905977 is about 12243.6096393180. The cubic root of 149905977 is about 531.2182454468.

The spelling of 149905977 in words is "one hundred forty-nine million, nine hundred five thousand, nine hundred seventy-seven".