40990 has 8 divisors (see below), whose sum is σ = 73800. Its totient is φ = 16392.

The previous prime is 40973. The next prime is 40993. The reversal of 40990 is 9904.

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

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 40990.

It is not an unprimeable number, because it can be changed into a prime (40993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2040 + ... + 2059.

It is an arithmetic number, because the mean of its divisors is an integer number (9225).

2⁴⁰⁹⁹⁰ is an apocalyptic number.

40990 is a deficient number, since it is larger than the sum of its proper divisors (32810).

40990 is a wasteful number, since it uses less digits than its factorization.

40990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4106.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 40990 is about 202.4598725674. The cubic root of 40990 is about 34.4793687472.

Adding to 40990 its product of nonzero digits (324), we get a palindrome (41314).

The spelling of 40990 in words is "forty thousand, nine hundred ninety".