404039476087189 has 2 divisors, whose sum is σ = 404039476087190. Its totient is φ = 404039476087188.

The previous prime is 404039476087123. The next prime is 404039476087307. The reversal of 404039476087189 is 981780674930404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 352418958480625 + 51620517606564 = 18772825^2 + 7184742^2 .

It is a cyclic number.

It is not a de Polignac number, because 404039476087189 - 2⁷ = 404039476087061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404039476087109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202019738043594 + 202019738043595.

It is an arithmetic number, because the mean of its divisors is an integer number (202019738043595).

Almost surely, 2^{404039476087189} is an apocalyptic number.

It is an amenable number.

404039476087189 is a deficient number, since it is larger than the sum of its proper divisors (1).

404039476087189 is an equidigital number, since it uses as much as digits as its factorization.

404039476087189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 292626432, while the sum is 70.

The spelling of 404039476087189 in words is "four hundred four trillion, thirty-nine billion, four hundred seventy-six million, eighty-seven thousand, one hundred eighty-nine".