40491268 has 6 divisors (see below), whose sum is σ = 70859726. Its totient is φ = 20245632.

The previous prime is 40491233. The next prime is 40491277. The reversal of 40491268 is 86219404.

It can be written as a sum of positive squares in only one way, i.e., 28643904 + 11847364 = 5352^2 + 3442^2 .

It is a super-3 number, since 3×40491268³ (a number of 24 digits) contains 333 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5061405 + ... + 5061412.

Almost surely, 2^40491268 is an apocalyptic number.

It is an amenable number.

40491268 is a deficient number, since it is larger than the sum of its proper divisors (30368458).

40491268 is a wasteful number, since it uses less digits than its factorization.

40491268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10122821 (or 10122819 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 40491268 is about 6363.2749429834. The cubic root of 40491268 is about 343.3895903877.

The spelling of 40491268 in words is "forty million, four hundred ninety-one thousand, two hundred sixty-eight".