149332639 has 4 divisors (see below), whose sum is σ = 149872024. Its totient is φ = 148793256.

The previous prime is 149332637. The next prime is 149332649. The reversal of 149332639 is 936233941.

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 149332639 - 2¹ = 149332637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149332637) 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, 269277 + ... + 269830.

It is an arithmetic number, because the mean of its divisors is an integer number (37468006).

Almost surely, 2^149332639 is an apocalyptic number.

149332639 is a deficient number, since it is larger than the sum of its proper divisors (539385).

149332639 is an equidigital number, since it uses as much as digits as its factorization.

149332639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539384.

The product of its digits is 104976, while the sum is 40.

The square root of 149332639 is about 12220.1734439410. The cubic root of 149332639 is about 530.5401387920.

The spelling of 149332639 in words is "one hundred forty-nine million, three hundred thirty-two thousand, six hundred thirty-nine".