404132387 has 2 divisors, whose sum is σ = 404132388. Its totient is φ = 404132386.

The previous prime is 404132383. The next prime is 404132437. The reversal of 404132387 is 783231404.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 404132387 - 2² = 404132383 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (404132383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202066193 + 202066194.

It is an arithmetic number, because the mean of its divisors is an integer number (202066194).

Almost surely, 2^404132387 is an apocalyptic number.

404132387 is a deficient number, since it is larger than the sum of its proper divisors (1).

404132387 is an equidigital number, since it uses as much as digits as its factorization.

404132387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 404132387 is about 20103.0442222067. The cubic root of 404132387 is about 739.3349192331.

The spelling of 404132387 in words is "four hundred four million, one hundred thirty-two thousand, three hundred eighty-seven".