40553990 has 8 divisors (see below), whose sum is σ = 72997200. Its totient is φ = 16221592.

The previous prime is 40553987. The next prime is 40554013. The reversal of 40553990 is 9935504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×40553990² = 3289252209840200, which contains 22 as substring.

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 40553990.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2027690 + ... + 2027709.

It is an arithmetic number, because the mean of its divisors is an integer number (9124650).

Almost surely, 2^40553990 is an apocalyptic number.

40553990 is a deficient number, since it is larger than the sum of its proper divisors (32443210).

40553990 is a wasteful number, since it uses less digits than its factorization.

40553990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4055406.

The product of its (nonzero) digits is 24300, while the sum is 35.

The square root of 40553990 is about 6368.2014729435. The cubic root of 40553990 is about 343.5668053075.

The spelling of 40553990 in words is "forty million, five hundred fifty-three thousand, nine hundred ninety".