77222469 has 4 divisors (see below), whose sum is σ = 102963296. Its totient is φ = 51481644.

The previous prime is 77222461. The next prime is 77222501. The reversal of 77222469 is 96422277.

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 77222469 - 2³ = 77222461 is a prime.

It is a super-2 number, since 2×77222469² = 11926619436911922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77222461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12870409 + ... + 12870414.

It is an arithmetic number, because the mean of its divisors is an integer number (25740824).

Almost surely, 2^77222469 is an apocalyptic number.

It is an amenable number.

77222469 is a deficient number, since it is larger than the sum of its proper divisors (25740827).

77222469 is a wasteful number, since it uses less digits than its factorization.

77222469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25740826.

The product of its digits is 84672, while the sum is 39.

The square root of 77222469 is about 8787.6315921868. The cubic root of 77222469 is about 425.8414131208.

The spelling of 77222469 in words is "seventy-seven million, two hundred twenty-two thousand, four hundred sixty-nine".