76748389 has 4 divisors (see below), whose sum is σ = 76766560. Its totient is φ = 76730220.

The previous prime is 76748383. The next prime is 76748407. The reversal of 76748389 is 98384767.

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, and also an emirpimes, since its reverse is a distinct semiprime: 98384767 = 13 ⋅7568059.

It is a cyclic number.

It is not a de Polignac number, because 76748389 - 2¹³ = 76740197 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 (76748383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 934 + ... + 12424.

It is an arithmetic number, because the mean of its divisors is an integer number (19191640).

Almost surely, 2^76748389 is an apocalyptic number.

It is an amenable number.

76748389 is a deficient number, since it is larger than the sum of its proper divisors (18171).

76748389 is a wasteful number, since it uses less digits than its factorization.

76748389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18170.

The product of its digits is 2032128, while the sum is 52.

The square root of 76748389 is about 8760.6157888587. The cubic root of 76748389 is about 424.9681895453.

The spelling of 76748389 in words is "seventy-six million, seven hundred forty-eight thousand, three hundred eighty-nine".