149388438 has 16 divisors (see below), whose sum is σ = 298900080. Its totient is φ = 49775616.

The previous prime is 149388409. The next prime is 149388487. The reversal of 149388438 is 834883941.

It is a super-3 number, since 3×149388438³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20406 + ... + 26742.

It is an arithmetic number, because the mean of its divisors is an integer number (18681255).

Almost surely, 2^149388438 is an apocalyptic number.

149388438 is an abundant number, since it is smaller than the sum of its proper divisors (149511642).

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

149388438 is a wasteful number, since it uses less digits than its factorization.

149388438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10271.

The product of its digits is 663552, while the sum is 48.

The square root of 149388438 is about 12222.4562997787. The cubic root of 149388438 is about 530.6062103555.

The spelling of 149388438 in words is "one hundred forty-nine million, three hundred eighty-eight thousand, four hundred thirty-eight".