938143723 has 16 divisors (see below), whose sum is σ = 1038735360. Its totient is φ = 840153600.

The previous prime is 938143699. The next prime is 938143799. The reversal of 938143723 is 327341839.

It is not a de Polignac number, because 938143723 - 2⁹ = 938143211 is a prime.

It is a super-2 number, since 2×938143723² = 1760227290008601458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (938143123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 500478 + ... + 502348.

It is an arithmetic number, because the mean of its divisors is an integer number (64920960).

Almost surely, 2^938143723 is an apocalyptic number.

938143723 is a deficient number, since it is larger than the sum of its proper divisors (100591637).

938143723 is a wasteful number, since it uses less digits than its factorization.

938143723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2538.

The product of its digits is 108864, while the sum is 40.

The square root of 938143723 is about 30629.1319335041. The cubic root of 938143723 is about 978.9408670714.

The spelling of 938143723 in words is "nine hundred thirty-eight million, one hundred forty-three thousand, seven hundred twenty-three".