149045939 has 4 divisors (see below), whose sum is σ = 170338224. Its totient is φ = 127753656.

The previous prime is 149045933. The next prime is 149046011. The reversal of 149045939 is 939540941.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 149045939 - 2¹² = 149041843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 149045939.

It is not an unprimeable number, because it can be changed into a prime (149045933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10646132 + ... + 10646145.

It is an arithmetic number, because the mean of its divisors is an integer number (42584556).

Almost surely, 2^149045939 is an apocalyptic number.

149045939 is a deficient number, since it is larger than the sum of its proper divisors (21292285).

149045939 is an equidigital number, since it uses as much as digits as its factorization.

149045939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21292284.

The product of its (nonzero) digits is 174960, while the sum is 44.

The square root of 149045939 is about 12208.4372054739. The cubic root of 149045939 is about 530.2003976964.

The spelling of 149045939 in words is "one hundred forty-nine million, forty-five thousand, nine hundred thirty-nine".