40818401 has 12 divisors (see below), whose sum is σ = 44523900. Its totient is φ = 37402560.

The previous prime is 40818391. The next prime is 40818409. The reversal of 40818401 is 10481804.

It can be written as a sum of positive squares in 6 ways, for example, as 8271376 + 32547025 = 2876^2 + 5705^2 .

It is not a de Polignac number, because 40818401 - 2¹⁴ = 40802017 is a prime.

It is a super-2 number, since 2×40818401² = 3332283720393602, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40818409) 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, 24371 + ... + 25991.

It is an arithmetic number, because the mean of its divisors is an integer number (3710325).

Almost surely, 2^40818401 is an apocalyptic number.

It is an amenable number.

40818401 is a deficient number, since it is larger than the sum of its proper divisors (3705499).

40818401 is a wasteful number, since it uses less digits than its factorization.

40818401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1796 (or 1783 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 40818401 is about 6388.9280008465. The cubic root of 40818401 is about 344.3118707012.

The spelling of 40818401 in words is "forty million, eight hundred eighteen thousand, four hundred one".