40873281 has 4 divisors (see below), whose sum is σ = 54497712. Its totient is φ = 27248852.

The previous prime is 40873279. The next prime is 40873291. The reversal of 40873281 is 18237804.

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 a cyclic number.

It is not a de Polignac number, because 40873281 - 2¹ = 40873279 is a prime.

It is a super-2 number, since 2×40873281² = 3341250199409922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40873291) 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, 6812211 + ... + 6812216.

It is an arithmetic number, because the mean of its divisors is an integer number (13624428).

Almost surely, 2^40873281 is an apocalyptic number.

It is an amenable number.

40873281 is a deficient number, since it is larger than the sum of its proper divisors (13624431).

40873281 is a wasteful number, since it uses less digits than its factorization.

40873281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13624430.

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 40873281 is about 6393.2214884204. The cubic root of 40873281 is about 344.4661097445.

The spelling of 40873281 in words is "forty million, eight hundred seventy-three thousand, two hundred eighty-one".