404072173 has 2 divisors, whose sum is σ = 404072174. Its totient is φ = 404072172.

The previous prime is 404072101. The next prime is 404072177. The reversal of 404072173 is 371270404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 402684489 + 1387684 = 20067^2 + 1178^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404072173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404072177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202036086 + 202036087.

It is an arithmetic number, because the mean of its divisors is an integer number (202036087).

Almost surely, 2^404072173 is an apocalyptic number.

It is an amenable number.

404072173 is a deficient number, since it is larger than the sum of its proper divisors (1).

404072173 is an equidigital number, since it uses as much as digits as its factorization.

404072173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 404072173 is about 20101.5465325432. The cubic root of 404072173 is about 739.2981981607.

The spelling of 404072173 in words is "four hundred four million, seventy-two thousand, one hundred seventy-three".