77476449 has 4 divisors (see below), whose sum is σ = 103301936. Its totient is φ = 51650964.

The previous prime is 77476447. The next prime is 77476459. The reversal of 77476449 is 94467477.

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 not a de Polignac number, because 77476449 - 2¹ = 77476447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77476398 and 77476407.

It is not an unprimeable number, because it can be changed into a prime (77476447) 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, 12912739 + ... + 12912744.

It is an arithmetic number, because the mean of its divisors is an integer number (25825484).

Almost surely, 2^77476449 is an apocalyptic number.

It is an amenable number.

77476449 is a deficient number, since it is larger than the sum of its proper divisors (25825487).

77476449 is a wasteful number, since it uses less digits than its factorization.

77476449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25825486.

The product of its digits is 1185408, while the sum is 48.

The square root of 77476449 is about 8802.0707222789. The cubic root of 77476449 is about 426.3077577298.

It can be divided in two parts, 7747 and 6449, that added together give a triangular number (14196 = T₁₆₈).

The spelling of 77476449 in words is "seventy-seven million, four hundred seventy-six thousand, four hundred forty-nine".