92878491 has 4 divisors (see below), whose sum is σ = 123837992. Its totient is φ = 61918992.

The previous prime is 92878477. The next prime is 92878493. The reversal of 92878491 is 19487829.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19487829 = 3 ⋅6495943.

It is not a de Polignac number, because 92878491 - 2¹⁰ = 92877467 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 92878491.

It is not an unprimeable number, because it can be changed into a prime (92878493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15479746 + ... + 15479751.

It is an arithmetic number, because the mean of its divisors is an integer number (30959498).

Almost surely, 2^92878491 is an apocalyptic number.

92878491 is a deficient number, since it is larger than the sum of its proper divisors (30959501).

92878491 is a wasteful number, since it uses less digits than its factorization.

92878491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30959500.

The product of its digits is 290304, while the sum is 48.

The square root of 92878491 is about 9637.3487536770. The cubic root of 92878491 is about 452.8680862828.

The spelling of 92878491 in words is "ninety-two million, eight hundred seventy-eight thousand, four hundred ninety-one".