40033998 has 24 divisors (see below), whose sum is σ = 87095736. Its totient is φ = 13290000.

The previous prime is 40033967. The next prime is 40034021. The reversal of 40033998 is 89933004.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88 + ... + 8948.

It is an arithmetic number, because the mean of its divisors is an integer number (3628989).

Almost surely, 2^40033998 is an apocalyptic number.

40033998 is an abundant number, since it is smaller than the sum of its proper divisors (47061738).

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

40033998 is a wasteful number, since it uses less digits than its factorization.

40033998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9120 (or 9117 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 40033998 is about 6327.2425273574. The cubic root of 40033998 is about 342.0920548340.

It can be divided in two parts, 4003 and 3998, that added together give a triangular number (8001 = T₁₂₆).

The spelling of 40033998 in words is "forty million, thirty-three thousand, nine hundred ninety-eight".