40198401 has 12 divisors (see below), whose sum is σ = 58146660. Its totient is φ = 26760960.

The previous prime is 40198397. The next prime is 40198447. The reversal of 40198401 is 10489104.

It can be written as a sum of positive squares in 2 ways, for example, as 24206400 + 15992001 = 4920^2 + 3999^2 .

It is not a de Polignac number, because 40198401 - 2² = 40198397 is a prime.

It is a super-2 number, since 2×40198401² = 3231822885913602, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40198481) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4521 + ... + 10041.

It is an arithmetic number, because the mean of its divisors is an integer number (4845555).

Almost surely, 2^40198401 is an apocalyptic number.

It is an amenable number.

40198401 is a deficient number, since it is larger than the sum of its proper divisors (17948259).

40198401 is a wasteful number, since it uses less digits than its factorization.

40198401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6336 (or 6333 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 40198401 is about 6340.2208952055. The cubic root of 40198401 is about 342.5596919422.

The spelling of 40198401 in words is "forty million, one hundred ninety-eight thousand, four hundred one".