404250397 has 2 divisors, whose sum is σ = 404250398. Its totient is φ = 404250396.

The previous prime is 404250389. The next prime is 404250409. The reversal of 404250397 is 793052404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 312971481 + 91278916 = 17691^2 + 9554^2 .

It is a cyclic number.

It is not a de Polignac number, because 404250397 - 2³ = 404250389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404250317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202125198 + 202125199.

It is an arithmetic number, because the mean of its divisors is an integer number (202125199).

Almost surely, 2^404250397 is an apocalyptic number.

It is an amenable number.

404250397 is a deficient number, since it is larger than the sum of its proper divisors (1).

404250397 is an equidigital number, since it uses as much as digits as its factorization.

404250397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 404250397 is about 20105.9791355706. The cubic root of 404250397 is about 739.4068762003.

The spelling of 404250397 in words is "four hundred four million, two hundred fifty thousand, three hundred ninety-seven".