920167997 has 8 divisors (see below), whose sum is σ = 1052760000. Its totient is φ = 787860864.

The previous prime is 920167987. The next prime is 920168003. The reversal of 920167997 is 799761029.

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

It is not a de Polignac number, because 920167997 - 2⁶ = 920167933 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 (920167957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64247 + ... + 77252.

It is an arithmetic number, because the mean of its divisors is an integer number (131595000).

Almost surely, 2^920167997 is an apocalyptic number.

It is an amenable number.

920167997 is a deficient number, since it is larger than the sum of its proper divisors (132592003).

920167997 is a wasteful number, since it uses less digits than its factorization.

920167997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142435.

The product of its (nonzero) digits is 428652, while the sum is 50.

The square root of 920167997 is about 30334.2709983279. The cubic root of 920167997 is about 972.6480226176.

The spelling of 920167997 in words is "nine hundred twenty million, one hundred sixty-seven thousand, nine hundred ninety-seven".