76378389 has 16 divisors (see below), whose sum is σ = 105676800. Its totient is φ = 49016880.

The previous prime is 76378349. The next prime is 76378403. The reversal of 76378389 is 98387367.

It is not a de Polignac number, because 76378389 - 2⁷ = 76378261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76378319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16444 + ... + 20570.

It is an arithmetic number, because the mean of its divisors is an integer number (6604800).

Almost surely, 2^76378389 is an apocalyptic number.

It is an amenable number.

76378389 is a deficient number, since it is larger than the sum of its proper divisors (29298411).

76378389 is a wasteful number, since it uses less digits than its factorization.

76378389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4360.

The product of its digits is 1524096, while the sum is 51.

The square root of 76378389 is about 8739.4730390339. The cubic root of 76378389 is about 424.2841726331.

It can be divided in two parts, 76378 and 389, that added together give a palindrome (76767).

The spelling of 76378389 in words is "seventy-six million, three hundred seventy-eight thousand, three hundred eighty-nine".