40811898 has 8 divisors (see below), whose sum is σ = 81623808. Its totient is φ = 13603964.

The previous prime is 40811887. The next prime is 40811909. The reversal of 40811898 is 89811804.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (40811887) and next prime (40811909).

It is a sphenic number, since it is the product of 3 distinct primes.

40811898 is an admirable number.

It is a super-2 number, since 2×40811898² = 3331222036724808, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3400986 + ... + 3400997.

It is an arithmetic number, because the mean of its divisors is an integer number (10202976).

Almost surely, 2^40811898 is an apocalyptic number.

40811898 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

40811898 is a wasteful number, since it uses less digits than its factorization.

40811898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6801988.

The product of its (nonzero) digits is 18432, while the sum is 39.

The square root of 40811898 is about 6388.4190532557. The cubic root of 40811898 is about 344.2935850020.

The spelling of 40811898 in words is "forty million, eight hundred eleven thousand, eight hundred ninety-eight".