78892297 has 8 divisors (see below), whose sum is σ = 86133312. Its totient is φ = 71662800.

The previous prime is 78892283. The next prime is 78892327. The reversal of 78892297 is 79229887.

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

It is not a de Polignac number, because 78892297 - 2²³ = 70503689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78892207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18183 + ... + 22099.

It is an arithmetic number, because the mean of its divisors is an integer number (10766664).

Almost surely, 2^78892297 is an apocalyptic number.

It is an amenable number.

78892297 is a deficient number, since it is larger than the sum of its proper divisors (7241015).

78892297 is a wasteful number, since it uses less digits than its factorization.

78892297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5759.

The product of its digits is 1016064, while the sum is 52.

The square root of 78892297 is about 8882.1335837737. The cubic root of 78892297 is about 428.8889597657. Note that the first 3 decimals are identical.

The spelling of 78892297 in words is "seventy-eight million, eight hundred ninety-two thousand, two hundred ninety-seven".