149409238 has 16 divisors (see below), whose sum is σ = 244705680. Its totient is φ = 67852800.

The previous prime is 149409233. The next prime is 149409241. The reversal of 149409238 is 832904941.

It is a self number, because there is not a number n which added to its sum of digits gives 149409238.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149409233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30478 + ... + 35038.

It is an arithmetic number, because the mean of its divisors is an integer number (15294105).

Almost surely, 2^149409238 is an apocalyptic number.

149409238 is a deficient number, since it is larger than the sum of its proper divisors (95296442).

149409238 is a wasteful number, since it uses less digits than its factorization.

149409238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6063.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 149409238 is about 12223.3071629572. The cubic root of 149409238 is about 530.6308354138.

The spelling of 149409238 in words is "one hundred forty-nine million, four hundred nine thousand, two hundred thirty-eight".