899925493 has 2 divisors, whose sum is σ = 899925494. Its totient is φ = 899925492.

The previous prime is 899925491. The next prime is 899925503. The reversal of 899925493 is 394529998.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 612216049 + 287709444 = 24743^2 + 16962^2 .

It is a cyclic number.

It is not a de Polignac number, because 899925493 - 2¹ = 899925491 is a prime.

Together with 899925491, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (899925491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449962746 + 449962747.

It is an arithmetic number, because the mean of its divisors is an integer number (449962747).

Almost surely, 2^899925493 is an apocalyptic number.

It is an amenable number.

899925493 is a deficient number, since it is larger than the sum of its proper divisors (1).

899925493 is an equidigital number, since it uses as much as digits as its factorization.

899925493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6298560, while the sum is 58.

The square root of 899925493 is about 29998.7581909652. The cubic root of 899925493 is about 965.4627410120.

The spelling of 899925493 in words is "eight hundred ninety-nine million, nine hundred twenty-five thousand, four hundred ninety-three".