149777961 has 16 divisors (see below), whose sum is σ = 210110208. Its totient is φ = 94780800.

The previous prime is 149777959. The next prime is 149777977. The reversal of 149777961 is 169777941.

It is not a de Polignac number, because 149777961 - 2¹ = 149777959 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149777951) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11905 + ... + 21006.

It is an arithmetic number, because the mean of its divisors is an integer number (13131888).

Almost surely, 2^149777961 is an apocalyptic number.

It is an amenable number.

149777961 is a deficient number, since it is larger than the sum of its proper divisors (60332247).

149777961 is a wasteful number, since it uses less digits than its factorization.

149777961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32992.

The product of its digits is 666792, while the sum is 51.

The square root of 149777961 is about 12238.3806526844. The cubic root of 149777961 is about 531.0669866300.

The spelling of 149777961 in words is "one hundred forty-nine million, seven hundred seventy-seven thousand, nine hundred sixty-one".