76105409 has 4 divisors (see below), whose sum is σ = 76257216. Its totient is φ = 75953604.

The previous prime is 76105373. The next prime is 76105423. The reversal of 76105409 is 90450167.

It is a happy number.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76105409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76105499) 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, 75149 + ... + 76154.

It is an arithmetic number, because the mean of its divisors is an integer number (19064304).

Almost surely, 2^76105409 is an apocalyptic number.

It is an amenable number.

76105409 is a deficient number, since it is larger than the sum of its proper divisors (151807).

76105409 is a wasteful number, since it uses less digits than its factorization.

76105409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151806.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 76105409 is about 8723.8414130474. The cubic root of 76105409 is about 423.7780986290.

The spelling of 76105409 in words is "seventy-six million, one hundred five thousand, four hundred nine".