149771967 has 16 divisors (see below), whose sum is σ = 209869440. Its totient is φ = 94887072.

The previous prime is 149771953. The next prime is 149771971. The reversal of 149771967 is 769177941.

It is not a de Polignac number, because 149771967 - 2⁶ = 149771903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149771987) 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, 10917 + ... + 20462.

It is an arithmetic number, because the mean of its divisors is an integer number (13116840).

Almost surely, 2^149771967 is an apocalyptic number.

149771967 is a deficient number, since it is larger than the sum of its proper divisors (60097473).

149771967 is a wasteful number, since it uses less digits than its factorization.

149771967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31462.

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

The square root of 149771967 is about 12238.1357648949. The cubic root of 149771967 is about 531.0599022367.

The spelling of 149771967 in words is "one hundred forty-nine million, seven hundred seventy-one thousand, nine hundred sixty-seven".