40198837 has 16 divisors (see below), whose sum is σ = 47108992. Its totient is φ = 33592320.

The previous prime is 40198831. The next prime is 40198841. The reversal of 40198837 is 73889104.

40198837 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40198837 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40198837.

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49162 + ... + 49972.

It is an arithmetic number, because the mean of its divisors is an integer number (2944312).

Almost surely, 2^40198837 is an apocalyptic number.

It is an amenable number.

40198837 is a deficient number, since it is larger than the sum of its proper divisors (6910155).

40198837 is an equidigital number, since it uses as much as digits as its factorization.

40198837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 988.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 40198837 is about 6340.2552787723. The cubic root of 40198837 is about 342.5609304283.

The spelling of 40198837 in words is "forty million, one hundred ninety-eight thousand, eight hundred thirty-seven".