149044491 has 12 divisors (see below), whose sum is σ = 227950632. Its totient is φ = 93518016.

The previous prime is 149044397. The next prime is 149044501. The reversal of 149044491 is 194440941.

It is not a de Polignac number, because 149044491 - 2¹⁴ = 149028107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149044391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 486921 + ... + 487226.

It is an arithmetic number, because the mean of its divisors is an integer number (18995886).

Almost surely, 2^149044491 is an apocalyptic number.

149044491 is a deficient number, since it is larger than the sum of its proper divisors (78906141).

149044491 is a wasteful number, since it uses less digits than its factorization.

149044491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974170 (or 974167 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 149044491 is about 12208.3779020802. The cubic root of 149044491 is about 530.1986807031.

The spelling of 149044491 in words is "one hundred forty-nine million, forty-four thousand, four hundred ninety-one".