400040004097 has 2 divisors, whose sum is σ = 400040004098. Its totient is φ = 400040004096.

The previous prime is 400040003983. The next prime is 400040004101. The reversal of 400040004097 is 790400040004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 386789461776 + 13250542321 = 621924^2 + 115111^2 .

It is a cyclic number.

It is not a de Polignac number, because 400040004097 - 2³⁵ = 365680265729 is a prime.

It is not a weakly prime, because it can be changed into another prime (400040002097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200020002048 + 200020002049.

It is an arithmetic number, because the mean of its divisors is an integer number (200020002049).

Almost surely, 2^400040004097 is an apocalyptic number.

It is an amenable number.

400040004097 is a deficient number, since it is larger than the sum of its proper divisors (1).

400040004097 is an equidigital number, since it uses as much as digits as its factorization.

400040004097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The spelling of 400040004097 in words is "four hundred billion, forty million, four thousand, ninety-seven".