149977448 has 8 divisors (see below), whose sum is σ = 281207730. Its totient is φ = 74988720.

The previous prime is 149977447. The next prime is 149977463. The reversal of 149977448 is 844779941.

It can be written as a sum of positive squares in only one way, i.e., 146942884 + 3034564 = 12122^2 + 1742^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 149977448.

It is not an unprimeable number, because it can be changed into a prime (149977447) 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 as a sum of consecutive naturals, namely, 9373583 + ... + 9373598.

Almost surely, 2^149977448 is an apocalyptic number.

It is an amenable number.

149977448 is a deficient number, since it is larger than the sum of its proper divisors (131230282).

149977448 is a wasteful number, since it uses less digits than its factorization.

149977448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18747187 (or 18747183 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 53.

The square root of 149977448 is about 12246.5279977633. The cubic root of 149977448 is about 531.3026553944.

The spelling of 149977448 in words is "one hundred forty-nine million, nine hundred seventy-seven thousand, four hundred forty-eight".