9390149923 has 32 divisors (see below), whose sum is σ = 12361236480. Its totient is φ = 6910596000.

The previous prime is 9390149911. The next prime is 9390149939. The reversal of 9390149923 is 3299410939.

It is a de Polignac number, because none of the positive numbers 2^k-9390149923 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9390149423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 474558 + ... + 493948.

It is an arithmetic number, because the mean of its divisors is an integer number (386288640).

Almost surely, 2^9390149923 is an apocalyptic number.

9390149923 is a deficient number, since it is larger than the sum of its proper divisors (2971086557).

9390149923 is a wasteful number, since it uses less digits than its factorization.

9390149923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19759.

The product of its (nonzero) digits is 472392, while the sum is 49.

The square root of 9390149923 is about 96902.7859403433. The cubic root of 9390149923 is about 2109.7168688626.

The spelling of 9390149923 in words is "nine billion, three hundred ninety million, one hundred forty-nine thousand, nine hundred twenty-three".