149574639 has 8 divisors (see below), whose sum is σ = 203195952. Its totient is φ = 97834880.

The previous prime is 149574611. The next prime is 149574673. The reversal of 149574639 is 936475941.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 149574639 - 2⁹ = 149574127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149572639) 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, 470202 + ... + 470519.

It is an arithmetic number, because the mean of its divisors is an integer number (25399494).

Almost surely, 2^149574639 is an apocalyptic number.

149574639 is a deficient number, since it is larger than the sum of its proper divisors (53621313).

149574639 is an equidigital number, since it uses as much as digits as its factorization.

149574639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940777.

The product of its digits is 816480, while the sum is 48.

The square root of 149574639 is about 12230.0710954597. The cubic root of 149574639 is about 530.8265718687.

The spelling of 149574639 in words is "one hundred forty-nine million, five hundred seventy-four thousand, six hundred thirty-nine".