76438321 has 8 divisors (see below), whose sum is σ = 77362560. Its totient is φ = 75518352.

The previous prime is 76438301. The next prime is 76438331. The reversal of 76438321 is 12383467.

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 76438321 - 2⁵ = 76438289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76438301) 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, 47496 + ... + 49078.

It is an arithmetic number, because the mean of its divisors is an integer number (9670320).

Almost surely, 2^76438321 is an apocalyptic number.

It is an amenable number.

76438321 is a deficient number, since it is larger than the sum of its proper divisors (924239).

76438321 is a wasteful number, since it uses less digits than its factorization.

76438321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2135.

The product of its digits is 24192, while the sum is 34.

The square root of 76438321 is about 8742.9011775268. The cubic root of 76438321 is about 424.3951182873.

The spelling of 76438321 in words is "seventy-six million, four hundred thirty-eight thousand, three hundred twenty-one".