40490006281 has 4 divisors (see below), whose sum is σ = 40534452864. Its totient is φ = 40445559700.

The previous prime is 40490006273. The next prime is 40490006329. The reversal of 40490006281 is 18260009404.

40490006281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 40490006281 - 2³ = 40490006273 is a prime.

It is a super-2 number, since 2×40490006281² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40490006681) 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, 22221925 + ... + 22223746.

It is an arithmetic number, because the mean of its divisors is an integer number (10133613216).

Almost surely, 2^40490006281 is an apocalyptic number.

It is an amenable number.

40490006281 is a deficient number, since it is larger than the sum of its proper divisors (44446583).

40490006281 is an equidigital number, since it uses as much as digits as its factorization.

40490006281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44446582.

The product of its (nonzero) digits is 13824, while the sum is 34.

The spelling of 40490006281 in words is "forty billion, four hundred ninety million, six thousand, two hundred eighty-one".