40561910 has 16 divisors (see below), whose sum is σ = 74250000. Its totient is φ = 15949536.

The previous prime is 40561909. The next prime is 40561921. The reversal of 40561910 is 1916504.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 40561910.

It is a congruent 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, 33785 + ... + 34964.

It is an arithmetic number, because the mean of its divisors is an integer number (4640625).

Almost surely, 2^40561910 is an apocalyptic number.

40561910 is a deficient number, since it is larger than the sum of its proper divisors (33688090).

40561910 is a wasteful number, since it uses less digits than its factorization.

40561910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68815.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 40561910 is about 6368.8232822084. The cubic root of 40561910 is about 343.5891695022.

The spelling of 40561910 in words is "forty million, five hundred sixty-one thousand, nine hundred ten".