40003798 has 4 divisors (see below), whose sum is σ = 60005700. Its totient is φ = 20001898.

The previous prime is 40003787. The next prime is 40003811. The reversal of 40003798 is 89730004.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000948 + ... + 10000951.

It is an arithmetic number, because the mean of its divisors is an integer number (15001425).

Almost surely, 2^40003798 is an apocalyptic number.

40003798 is a deficient number, since it is larger than the sum of its proper divisors (20001902).

40003798 is a wasteful number, since it uses less digits than its factorization.

40003798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20001901.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 40003798 is about 6324.8555714735. The cubic root of 40003798 is about 342.0060131405.

The spelling of 40003798 in words is "forty million, three thousand, seven hundred ninety-eight".