403254491 has 2 divisors, whose sum is σ = 403254492. Its totient is φ = 403254490.

The previous prime is 403254487. The next prime is 403254517. The reversal of 403254491 is 194452304.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 403254491 - 2² = 403254487 is a prime.

It is a super-2 number, since 2×403254491² = 325228369023338162, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (403254451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201627245 + 201627246.

It is an arithmetic number, because the mean of its divisors is an integer number (201627246).

Almost surely, 2^403254491 is an apocalyptic number.

403254491 is a deficient number, since it is larger than the sum of its proper divisors (1).

403254491 is an equidigital number, since it uses as much as digits as its factorization.

403254491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 403254491 is about 20081.1974493555. The cubic root of 403254491 is about 738.7991791799.

The spelling of 403254491 in words is "four hundred three million, two hundred fifty-four thousand, four hundred ninety-one".