40801881 has 4 divisors (see below), whose sum is σ = 54402512. Its totient is φ = 27201252.

The previous prime is 40801867. The next prime is 40801889. The reversal of 40801881 is 18810804.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 40801881 - 2¹⁰ = 40800857 is a prime.

It is a super-2 number, since 2×40801881² = 3329586986276322, 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 (40801889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6800311 + ... + 6800316.

It is an arithmetic number, because the mean of its divisors is an integer number (13600628).

Almost surely, 2^40801881 is an apocalyptic number.

It is an amenable number.

40801881 is a deficient number, since it is larger than the sum of its proper divisors (13600631).

40801881 is a wasteful number, since it uses less digits than its factorization.

40801881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13600630.

The product of its (nonzero) digits is 2048, while the sum is 30.

The square root of 40801881 is about 6387.6350083579. The cubic root of 40801881 is about 344.2654145320.

The spelling of 40801881 in words is "forty million, eight hundred one thousand, eight hundred eighty-one".