40968000391 has 4 divisors (see below), whose sum is σ = 40971330792. Its totient is φ = 40964669992.

The previous prime is 40968000347. The next prime is 40968000413. The reversal of 40968000391 is 19300086904.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40968000391 - 2¹³ = 40967992199 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40968000301) 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, 1646680 + ... + 1671373.

It is an arithmetic number, because the mean of its divisors is an integer number (10242832698).

Almost surely, 2^40968000391 is an apocalyptic number.

40968000391 is the 128013-rd centered pentagonal number.

40968000391 is a deficient number, since it is larger than the sum of its proper divisors (3330401).

40968000391 is a wasteful number, since it uses less digits than its factorization.

40968000391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3330400.

The product of its (nonzero) digits is 46656, while the sum is 40.

The spelling of 40968000391 in words is "forty billion, nine hundred sixty-eight million, three hundred ninety-one", and thus it is an aban number.