40036998 has 16 divisors (see below), whose sum is σ = 80372736. Its totient is φ = 13295880.

The previous prime is 40036993. The next prime is 40037021. The reversal of 40036998 is 89963004.

It is a super-2 number, since 2×40036998² = 3205922417704008, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40036993) 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, 10686 + ... + 13937.

It is an arithmetic number, because the mean of its divisors is an integer number (5023296).

Almost surely, 2^40036998 is an apocalyptic number.

40036998 is an abundant number, since it is smaller than the sum of its proper divisors (40335738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40036998 is a wasteful number, since it uses less digits than its factorization.

40036998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24899.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 40036998 is about 6327.4795930133. The cubic root of 40036998 is about 342.1005996590.

The spelling of 40036998 in words is "forty million, thirty-six thousand, nine hundred ninety-eight".