40198473 has 18 divisors (see below), whose sum is σ = 67545114. Its totient is φ = 22970304.

The previous prime is 40198469. The next prime is 40198481. The reversal of 40198473 is 37489104.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 23941449 + 16257024 = 4893^2 + 4032^2 .

It is not a de Polignac number, because 40198473 - 2² = 40198469 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40198463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 45136 + ... + 46017.

Almost surely, 2^40198473 is an apocalyptic number.

It is an amenable number.

40198473 is a deficient number, since it is larger than the sum of its proper divisors (27346641).

40198473 is a wasteful number, since it uses less digits than its factorization.

40198473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91173 (or 91163 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 40198473 is about 6340.2265732385. The cubic root of 40198473 is about 342.5598964634.

The spelling of 40198473 in words is "forty million, one hundred ninety-eight thousand, four hundred seventy-three".