40200890 has 16 divisors (see below), whose sum is σ = 72492840. Its totient is φ = 16051200.

The previous prime is 40200883. The next prime is 40200917. The reversal of 40200890 is 9800204.

It can be written as a sum of positive squares in 4 ways, for example, as 39853969 + 346921 = 6313^2 + 589^2 .

It is a super-2 number, since 2×40200890² = 3232223113584200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2666 + ... + 9354.

Almost surely, 2^40200890 is an apocalyptic number.

40200890 is a deficient number, since it is larger than the sum of its proper divisors (32291950).

40200890 is a wasteful number, since it uses less digits than its factorization.

40200890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7297.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 40200890 is about 6340.4171787036. The cubic root of 40200890 is about 342.5667619869.

The spelling of 40200890 in words is "forty million, two hundred thousand, eight hundred ninety".