76309947 has 48 divisors (see below), whose sum is σ = 136264960. Its totient is φ = 40170816.

The previous prime is 76309927. The next prime is 76309949. The reversal of 76309947 is 74990367.

76309947 is a `hidden beast` number, since 7 + 630 + 9 + 9 + 4 + 7 = 666.

It is not a de Polignac number, because 76309947 - 2⁷ = 76309819 is a prime.

It is a super-3 number, since 3×76309947³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (76309949) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 43428 + ... + 45150.

Almost surely, 2^76309947 is an apocalyptic number.

76309947 is a deficient number, since it is larger than the sum of its proper divisors (59955013).

76309947 is a wasteful number, since it uses less digits than its factorization.

76309947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1792 (or 1789 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 45.

The square root of 76309947 is about 8735.5564791260. The cubic root of 76309947 is about 424.1574023260.

The spelling of 76309947 in words is "seventy-six million, three hundred nine thousand, nine hundred forty-seven".