40945810 has 16 divisors (see below), whose sum is σ = 73811736. Its totient is φ = 16354048.

The previous prime is 40945799. The next prime is 40945811. The reversal of 40945810 is 1854904.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 29474041 + 11471769 = 5429^2 + 3387^2 .

It is a super-2 number, since 2×40945810² = 3353118713112200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40945811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5082 + ... + 10378.

Almost surely, 2^40945810 is an apocalyptic number.

40945810 is a deficient number, since it is larger than the sum of its proper divisors (32865926).

40945810 is a wasteful number, since it uses less digits than its factorization.

40945810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6077.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 40945810 is about 6398.8913102193. The cubic root of 40945810 is about 344.6697392602.

The spelling of 40945810 in words is "forty million, nine hundred forty-five thousand, eight hundred ten".