149994427 has 4 divisors (see below), whose sum is σ = 163630296. Its totient is φ = 136358560.

The previous prime is 149994413. The next prime is 149994433. The reversal of 149994427 is 724499941.

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 149994427 - 2¹⁵ = 149961659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149994407) 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 3 ways as a sum of consecutive naturals, for example, 6817918 + ... + 6817939.

It is an arithmetic number, because the mean of its divisors is an integer number (40907574).

Almost surely, 2^149994427 is an apocalyptic number.

149994427 is a deficient number, since it is larger than the sum of its proper divisors (13635869).

149994427 is a wasteful number, since it uses less digits than its factorization.

149994427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13635868.

The product of its digits is 653184, while the sum is 49.

The square root of 149994427 is about 12247.2211950303. The cubic root of 149994427 is about 531.3227042918.

The spelling of 149994427 in words is "one hundred forty-nine million, nine hundred ninety-four thousand, four hundred twenty-seven".