149217744 has 160 divisors (see below), whose sum is σ = 446471424. Its totient is φ = 42577920.

The previous prime is 149217727. The next prime is 149217763. The reversal of 149217744 is 447712941.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 530884 + ... + 531164.

Almost surely, 2^149217744 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 149217744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (223235712).

149217744 is an abundant number, since it is smaller than the sum of its proper divisors (297253680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

149217744 is a wasteful number, since it uses less digits than its factorization.

149217744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365 (or 359 counting only the distinct ones).

The product of its digits is 56448, while the sum is 39.

The square root of 149217744 is about 12215.4715013380. The cubic root of 149217744 is about 530.4040398356.

The spelling of 149217744 in words is "one hundred forty-nine million, two hundred seventeen thousand, seven hundred forty-four".