76420399 has 8 divisors (see below), whose sum is σ = 84781440. Its totient is φ = 68295000.

The previous prime is 76420367. The next prime is 76420441. The reversal of 76420399 is 99302467.

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 76420399 - 2⁵ = 76420367 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 (76420339) 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, 58227 + ... + 59524.

It is an arithmetic number, because the mean of its divisors is an integer number (10597680).

Almost surely, 2^76420399 is an apocalyptic number.

76420399 is a deficient number, since it is larger than the sum of its proper divisors (8361041).

76420399 is a wasteful number, since it uses less digits than its factorization.

76420399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117821.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 76420399 is about 8741.8761716236. The cubic root of 76420399 is about 424.3619472995.

The spelling of 76420399 in words is "seventy-six million, four hundred twenty thousand, three hundred ninety-nine".