899246149 has 2 divisors, whose sum is σ = 899246150. Its totient is φ = 899246148.

The previous prime is 899246147. The next prime is 899246167. The reversal of 899246149 is 941642998.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 899100225 + 145924 = 29985^2 + 382^2 .

It is a cyclic number.

It is not a de Polignac number, because 899246149 - 2¹ = 899246147 is a prime.

Together with 899246147, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 899246096 and 899246105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (899246147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449623074 + 449623075.

It is an arithmetic number, because the mean of its divisors is an integer number (449623075).

Almost surely, 2^899246149 is an apocalyptic number.

It is an amenable number.

899246149 is a deficient number, since it is larger than the sum of its proper divisors (1).

899246149 is an equidigital number, since it uses as much as digits as its factorization.

899246149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1119744, while the sum is 52.

The square root of 899246149 is about 29987.4331845858. The cubic root of 899246149 is about 965.2197407363.

The spelling of 899246149 in words is "eight hundred ninety-nine million, two hundred forty-six thousand, one hundred forty-nine".