77406479 has 8 divisors (see below), whose sum is σ = 79704240. Its totient is φ = 75119616.

The previous prime is 77406467. The next prime is 77406487. The reversal of 77406479 is 97460477.

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 77406479 - 2⁴ = 77406463 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 (77406419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13007 + ... + 17999.

It is an arithmetic number, because the mean of its divisors is an integer number (9963030).

Almost surely, 2^77406479 is an apocalyptic number.

77406479 is a deficient number, since it is larger than the sum of its proper divisors (2297761).

77406479 is a wasteful number, since it uses less digits than its factorization.

77406479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5449.

The product of its (nonzero) digits is 296352, while the sum is 44.

The square root of 77406479 is about 8798.0951915741. The cubic root of 77406479 is about 426.1793843626.

The spelling of 77406479 in words is "seventy-seven million, four hundred six thousand, four hundred seventy-nine".