76333409 has 4 divisors (see below), whose sum is σ = 77773716. Its totient is φ = 74893104.

The previous prime is 76333391. The next prime is 76333429. The reversal of 76333409 is 90433367.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23814400 + 52519009 = 4880^2 + 7247^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76333409 is a prime.

It is a super-2 number, since 2×76333409² = 11653578659122562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76333429) 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, 720074 + ... + 720179.

It is an arithmetic number, because the mean of its divisors is an integer number (19443429).

Almost surely, 2^76333409 is an apocalyptic number.

It is an amenable number.

76333409 is a deficient number, since it is larger than the sum of its proper divisors (1440307).

76333409 is a wasteful number, since it uses less digits than its factorization.

76333409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1440306.

The product of its (nonzero) digits is 40824, while the sum is 35.

The square root of 76333409 is about 8736.8992783481. The cubic root of 76333409 is about 424.2008678751.

The spelling of 76333409 in words is "seventy-six million, three hundred thirty-three thousand, four hundred nine".