76222009 has 4 divisors (see below), whose sum is σ = 76271220. Its totient is φ = 76172800.

The previous prime is 76221991. The next prime is 76222019. The reversal of 76222009 is 90022267.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90022267 = 2393 ⋅37619.

It can be written as a sum of positive squares in 2 ways, for example, as 64641600 + 11580409 = 8040^2 + 3403^2 .

It is a cyclic number.

It is not a de Polignac number, because 76222009 - 2⁷ = 76221881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76222019) 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, 22204 + ... + 25405.

It is an arithmetic number, because the mean of its divisors is an integer number (19067805).

Almost surely, 2^76222009 is an apocalyptic number.

It is an amenable number.

76222009 is a deficient number, since it is larger than the sum of its proper divisors (49211).

76222009 is a wasteful number, since it uses less digits than its factorization.

76222009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49210.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 76222009 is about 8730.5216911706. The cubic root of 76222009 is about 423.9944096362.

The spelling of 76222009 in words is "seventy-six million, two hundred twenty-two thousand, nine".