149438091 has 16 divisors (see below), whose sum is σ = 221051520. Its totient is φ = 89032320.

The previous prime is 149438089. The next prime is 149438099. The reversal of 149438091 is 190834941.

149438091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 149438091 - 2¹ = 149438089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149438099) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36430 + ... + 40323.

It is an arithmetic number, because the mean of its divisors is an integer number (13815720).

Almost surely, 2^149438091 is an apocalyptic number.

149438091 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

149438091 is a deficient number, since it is larger than the sum of its proper divisors (71613429).

149438091 is a wasteful number, since it uses less digits than its factorization.

149438091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76826.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 149438091 is about 12224.4873512144. The cubic root of 149438091 is about 530.6649906112.

The spelling of 149438091 in words is "one hundred forty-nine million, four hundred thirty-eight thousand, ninety-one".