77869922 has 8 divisors (see below), whose sum is σ = 125789916. Its totient is φ = 35939952.

The previous prime is 77869921. The next prime is 77869931. The reversal of 77869922 is 22996877.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 77598481 + 271441 = 8809^2 + 521^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (77869921) 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, 1497473 + ... + 1497524.

Almost surely, 2^77869922 is an apocalyptic number.

77869922 is a deficient number, since it is larger than the sum of its proper divisors (47919994).

77869922 is a wasteful number, since it uses less digits than its factorization.

77869922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2995012.

The product of its digits is 762048, while the sum is 50.

The square root of 77869922 is about 8824.3935768981. The cubic root of 77869922 is about 427.0282236681.

The spelling of 77869922 in words is "seventy-seven million, eight hundred sixty-nine thousand, nine hundred twenty-two".