76449905 has 8 divisors (see below), whose sum is σ = 104845632. Its totient is φ = 52422768.

The previous prime is 76449859. The next prime is 76449917. The reversal of 76449905 is 50994467.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 76449905 - 2⁸ = 76449649 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1092107 + ... + 1092176.

It is an arithmetic number, because the mean of its divisors is an integer number (13105704).

Almost surely, 2^76449905 is an apocalyptic number.

It is an amenable number.

76449905 is a deficient number, since it is larger than the sum of its proper divisors (28395727).

76449905 is a wasteful number, since it uses less digits than its factorization.

76449905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2184295.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 76449905 is about 8743.5636327530. The cubic root of 76449905 is about 424.4165558100.

The spelling of 76449905 in words is "seventy-six million, four hundred forty-nine thousand, nine hundred five".