76247489 has 4 divisors (see below), whose sum is σ = 77869824. Its totient is φ = 74625156.

The previous prime is 76247473. The next prime is 76247503. The reversal of 76247489 is 98474267.

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.

It is a cyclic number.

It is not a de Polignac number, because 76247489 - 2⁴ = 76247473 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47), and also a Moran number because the ratio is a prime number: 1622287 = 76247489 / (7 + 6 + 2 + 4 + 7 + 4 + 8 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76247419) 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, 811097 + ... + 811190.

It is an arithmetic number, because the mean of its divisors is an integer number (19467456).

Almost surely, 2^76247489 is an apocalyptic number.

It is an amenable number.

76247489 is a deficient number, since it is larger than the sum of its proper divisors (1622335).

76247489 is a wasteful number, since it uses less digits than its factorization.

76247489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1622334.

The product of its digits is 677376, while the sum is 47.

The square root of 76247489 is about 8731.9808176610. The cubic root of 76247489 is about 424.0416495962.

The spelling of 76247489 in words is "seventy-six million, two hundred forty-seven thousand, four hundred eighty-nine".