402726897 has 20 divisors (see below), whose sum is σ = 602669056. Its totient is φ = 268009560.

The previous prime is 402726853. The next prime is 402726931. The reversal of 402726897 is 798627204.

It is not a de Polignac number, because 402726897 - 2¹⁵ = 402694129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402726827) 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 in 19 ways as a sum of consecutive naturals, for example, 45072 + ... + 53262.

Almost surely, 2^402726897 is an apocalyptic number.

It is an amenable number.

402726897 is a deficient number, since it is larger than the sum of its proper divisors (199942159).

402726897 is an equidigital number, since it uses as much as digits as its factorization.

402726897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8810 (or 8801 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 402726897 is about 20068.0566323698. The cubic root of 402726897 is about 738.4768383774.

The spelling of 402726897 in words is "four hundred two million, seven hundred twenty-six thousand, eight hundred ninety-seven".