77239393 has 8 divisors (see below), whose sum is σ = 96298560. Its totient is φ = 60186480.

The previous prime is 77239333. The next prime is 77239399. The reversal of 77239393 is 39393277.

It is a happy number.

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 77239393 - 2⁹ = 77238881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77239399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 501478 + ... + 501631.

It is an arithmetic number, because the mean of its divisors is an integer number (12037320).

Almost surely, 2^77239393 is an apocalyptic number.

It is an amenable number.

77239393 is a deficient number, since it is larger than the sum of its proper divisors (19059167).

77239393 is a wasteful number, since it uses less digits than its factorization.

77239393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1003127.

The product of its digits is 214326, while the sum is 43.

The square root of 77239393 is about 8788.5944837613. The cubic root of 77239393 is about 425.8725198429.

The spelling of 77239393 in words is "seventy-seven million, two hundred thirty-nine thousand, three hundred ninety-three".