940158391 has 8 divisors (see below), whose sum is σ = 947596880. Its totient is φ = 932746752.

The previous prime is 940158383. The next prime is 940158431. The reversal of 940158391 is 193851049.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 940158391 - 2³ = 940158383 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 (940158301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66721 + ... + 79573.

It is an arithmetic number, because the mean of its divisors is an integer number (118449610).

Almost surely, 2^940158391 is an apocalyptic number.

940158391 is a deficient number, since it is larger than the sum of its proper divisors (7438489).

940158391 is a wasteful number, since it uses less digits than its factorization.

940158391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13425.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 940158391 is about 30662.0023971038. The cubic root of 940158391 is about 979.6411260593.

The spelling of 940158391 in words is "nine hundred forty million, one hundred fifty-eight thousand, three hundred ninety-one".