40818297 has 16 divisors (see below), whose sum is σ = 58979648. Its totient is φ = 24960960.

The previous prime is 40818287. The next prime is 40818311. The reversal of 40818297 is 79281804.

It is not a de Polignac number, because 40818297 - 2⁶ = 40818233 is a prime.

It is a super-2 number, since 2×40818297² = 3332266739960418, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (40818257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3147 + ... + 9567.

It is an arithmetic number, because the mean of its divisors is an integer number (3686228).

Almost surely, 2^40818297 is an apocalyptic number.

It is an amenable number.

40818297 is a deficient number, since it is larger than the sum of its proper divisors (18161351).

40818297 is a wasteful number, since it uses less digits than its factorization.

40818297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6600.

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 40818297 is about 6388.9198617607. The cubic root of 40818297 is about 344.3115782803.

The spelling of 40818297 in words is "forty million, eight hundred eighteen thousand, two hundred ninety-seven".