76939487 has 4 divisors (see below), whose sum is σ = 77017656. Its totient is φ = 76861320.

The previous prime is 76939463. The next prime is 76939519. The reversal of 76939487 is 78493967.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78493967 = 41 ⋅1914487.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76939487 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 (76909487) 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, 37589 + ... + 39582.

It is an arithmetic number, because the mean of its divisors is an integer number (19254414).

Almost surely, 2^76939487 is an apocalyptic number.

76939487 is a deficient number, since it is larger than the sum of its proper divisors (78169).

76939487 is an equidigital number, since it uses as much as digits as its factorization.

76939487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78168.

The product of its digits is 2286144, while the sum is 53.

The square root of 76939487 is about 8771.5156615034. The cubic root of 76939487 is about 425.3206106727.

The spelling of 76939487 in words is "seventy-six million, nine hundred thirty-nine thousand, four hundred eighty-seven".