149012893 has 4 divisors (see below), whose sum is σ = 150150528. Its totient is φ = 147875260.

The previous prime is 149012887. The next prime is 149012909. The reversal of 149012893 is 398210941.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 398210941 = 17 ⋅23424173.

It is a cyclic number.

It is not a de Polignac number, because 149012893 - 2⁵ = 149012861 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 (149012833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 568621 + ... + 568882.

It is an arithmetic number, because the mean of its divisors is an integer number (37537632).

Almost surely, 2^149012893 is an apocalyptic number.

It is an amenable number.

149012893 is a deficient number, since it is larger than the sum of its proper divisors (1137635).

149012893 is a wasteful number, since it uses less digits than its factorization.

149012893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1137634.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 149012893 is about 12207.0837221672. The cubic root of 149012893 is about 530.1612100081.

The spelling of 149012893 in words is "one hundred forty-nine million, twelve thousand, eight hundred ninety-three".