77846493 has 4 divisors (see below), whose sum is σ = 103795328. Its totient is φ = 51897660.

The previous prime is 77846479. The next prime is 77846497. The reversal of 77846493 is 39464877.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 77846493 - 2⁹ = 77845981 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 (77846497) 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 3 ways as a sum of consecutive naturals, for example, 12974413 + ... + 12974418.

It is an arithmetic number, because the mean of its divisors is an integer number (25948832).

Almost surely, 2^77846493 is an apocalyptic number.

It is an amenable number.

77846493 is a deficient number, since it is larger than the sum of its proper divisors (25948835).

77846493 is a wasteful number, since it uses less digits than its factorization.

77846493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25948834.

The product of its digits is 1016064, while the sum is 48.

The square root of 77846493 is about 8823.0659637113. The cubic root of 77846493 is about 426.9853922061.

The spelling of 77846493 in words is "seventy-seven million, eight hundred forty-six thousand, four hundred ninety-three".