40190798 has 16 divisors (see below), whose sum is σ = 63620640. Its totient is φ = 19003776.

The previous prime is 40190791. The next prime is 40190803. The reversal of 40190798 is 89709104.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40190791) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 815 + ... + 9002.

It is an arithmetic number, because the mean of its divisors is an integer number (3976290).

Almost surely, 2^40190798 is an apocalyptic number.

40190798 is a deficient number, since it is larger than the sum of its proper divisors (23429842).

40190798 is a wasteful number, since it uses less digits than its factorization.

40190798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9931.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 40190798 is about 6339.6212820641. The cubic root of 40190798 is about 342.5380936904.

The spelling of 40190798 in words is "forty million, one hundred ninety thousand, seven hundred ninety-eight".