40220901 has 32 divisors (see below), whose sum is σ = 68633600. Its totient is φ = 22803120.

The previous prime is 40220893. The next prime is 40220909. The reversal of 40220901 is 10902204.

It is an interprime number because it is at equal distance from previous prime (40220893) and next prime (40220909).

It is not a de Polignac number, because 40220901 - 2³ = 40220893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40220909) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25506 + ... + 27036.

It is an arithmetic number, because the mean of its divisors is an integer number (2144800).

Almost surely, 2^40220901 is an apocalyptic number.

It is an amenable number.

40220901 is a deficient number, since it is larger than the sum of its proper divisors (28412699).

40220901 is a wasteful number, since it uses less digits than its factorization.

40220901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686 (or 1680 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 40220901 is about 6341.9950331106. The cubic root of 40220901 is about 342.6235929538.

The spelling of 40220901 in words is "forty million, two hundred twenty thousand, nine hundred one".