40491922 has 12 divisors (see below), whose sum is σ = 61761258. Its totient is φ = 19910400.

The previous prime is 40491911. The next prime is 40491959. The reversal of 40491922 is 22919404.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 16491721 + 24000201 = 4061^2 + 4899^2 .

It is a plaindrome in base 12.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4722 + ... + 10162.

Almost surely, 2^40491922 is an apocalyptic number.

40491922 is a deficient number, since it is larger than the sum of its proper divisors (21269336).

40491922 is an equidigital number, since it uses as much as digits as its factorization.

40491922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5565 (or 5504 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 40491922 is about 6363.3263314088. The cubic root of 40491922 is about 343.3914391450.

The spelling of 40491922 in words is "forty million, four hundred ninety-one thousand, nine hundred twenty-two".