939897149 has 4 divisors (see below), whose sum is σ = 989365440. Its totient is φ = 890428860.

The previous prime is 939897137. The next prime is 939897157. The reversal of 939897149 is 941798939.

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.

It is a cyclic number.

It is not a de Polignac number, because 939897149 - 2²⁴ = 923119933 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 (939897109) 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, 24734117 + ... + 24734154.

It is an arithmetic number, because the mean of its divisors is an integer number (247341360).

Almost surely, 2^939897149 is an apocalyptic number.

It is an amenable number.

939897149 is a deficient number, since it is larger than the sum of its proper divisors (49468291).

939897149 is a wasteful number, since it uses less digits than its factorization.

939897149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49468290.

The product of its digits is 4408992, while the sum is 59.

The square root of 939897149 is about 30657.7420727620. The cubic root of 939897149 is about 979.5503799618.

The spelling of 939897149 in words is "nine hundred thirty-nine million, eight hundred ninety-seven thousand, one hundred forty-nine".