921422669 has 4 divisors (see below), whose sum is σ = 921537696. Its totient is φ = 921307644.

The previous prime is 921422617. The next prime is 921422693. The reversal of 921422669 is 966224129.

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, and also an emirpimes, since its reverse is a distinct semiprime: 966224129 = 13 ⋅74324933.

It is a cyclic number.

It is not a de Polignac number, because 921422669 - 2²⁰ = 920374093 is a prime.

It is a super-2 number, since 2×921422669² = 1698039469894167122, 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 (921422569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44519 + ... + 61844.

It is an arithmetic number, because the mean of its divisors is an integer number (230384424).

Almost surely, 2^921422669 is an apocalyptic number.

It is an amenable number.

921422669 is a deficient number, since it is larger than the sum of its proper divisors (115027).

921422669 is a wasteful number, since it uses less digits than its factorization.

921422669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115026.

The product of its digits is 93312, while the sum is 41.

The square root of 921422669 is about 30354.9447207535. The cubic root of 921422669 is about 973.0898984499.

The spelling of 921422669 in words is "nine hundred twenty-one million, four hundred twenty-two thousand, six hundred sixty-nine".