149646239 has 8 divisors (see below), whose sum is σ = 151488672. Its totient is φ = 147813120.

The previous prime is 149646227. The next prime is 149646247. The reversal of 149646239 is 932646941.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149646239 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 149646239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149646439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33254 + ... + 37484.

It is an arithmetic number, because the mean of its divisors is an integer number (18936084).

Almost surely, 2^149646239 is an apocalyptic number.

149646239 is a deficient number, since it is larger than the sum of its proper divisors (1842433).

149646239 is a wasteful number, since it uses less digits than its factorization.

149646239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4657.

The product of its digits is 279936, while the sum is 44.

The square root of 149646239 is about 12232.9979563474. The cubic root of 149646239 is about 530.9112589517.

The spelling of 149646239 in words is "one hundred forty-nine million, six hundred forty-six thousand, two hundred thirty-nine".