40198836 has 12 divisors (see below), whose sum is σ = 93797312. Its totient is φ = 13399608.

The previous prime is 40198831. The next prime is 40198841. The reversal of 40198836 is 63889104.

It is an interprime number because it is at equal distance from previous prime (40198831) and next prime (40198841).

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 40198794 and 40198803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40198831) 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, 1674940 + ... + 1674963.

Almost surely, 2^40198836 is an apocalyptic number.

It is an amenable number.

40198836 is an abundant number, since it is smaller than the sum of its proper divisors (53598476).

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

40198836 is a wasteful number, since it uses less digits than its factorization.

40198836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3349910 (or 3349908 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 40198836 is about 6340.2551999111. The cubic root of 40198836 is about 342.5609275877.

The spelling of 40198836 in words is "forty million, one hundred ninety-eight thousand, eight hundred thirty-six".