899942401 has 2 divisors, whose sum is σ = 899942402. Its totient is φ = 899942400.

The previous prime is 899942389. The next prime is 899942411. The reversal of 899942401 is 104249998.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 829382401 + 70560000 = 28799^2 + 8400^2 .

It is a cyclic number.

It is not a de Polignac number, because 899942401 - 2⁷ = 899942273 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (899942411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449971200 + 449971201.

It is an arithmetic number, because the mean of its divisors is an integer number (449971201).

Almost surely, 2^899942401 is an apocalyptic number.

It is an amenable number.

899942401 is a deficient number, since it is larger than the sum of its proper divisors (1).

899942401 is an equidigital number, since it uses as much as digits as its factorization.

899942401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 899942401 is about 29999.0400013067. The cubic root of 899942401 is about 965.4687874169.

The spelling of 899942401 in words is "eight hundred ninety-nine million, nine hundred forty-two thousand, four hundred one".