649410922 has 4 divisors (see below), whose sum is σ = 974116386. Its totient is φ = 324705460.

The previous prime is 649410893. The next prime is 649410953. The reversal of 649410922 is 229014946.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 229014946 = 2 ⋅114507473.

It can be written as a sum of positive squares in only one way, i.e., 559369801 + 90041121 = 23651^2 + 9489^2 .

It is a super-2 number, since 2×649410922² = 843469091225780168, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162352729 + ... + 162352732.

Almost surely, 2^649410922 is an apocalyptic number.

649410922 is a deficient number, since it is larger than the sum of its proper divisors (324705464).

649410922 is a wasteful number, since it uses less digits than its factorization.

649410922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324705463.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 649410922 is about 25483.5421792183. The cubic root of 649410922 is about 865.9773429669.

The spelling of 649410922 in words is "six hundred forty-nine million, four hundred ten thousand, nine hundred twenty-two".