451299949 has 2 divisors, whose sum is σ = 451299950. Its totient is φ = 451299948.

The previous prime is 451299941. The next prime is 451300009. The reversal of 451299949 is 949992154.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 440244324 + 11055625 = 20982^2 + 3325^2 .

It is a cyclic number.

It is not a de Polignac number, because 451299949 - 2³ = 451299941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 451299896 and 451299905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (451299941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225649974 + 225649975.

It is an arithmetic number, because the mean of its divisors is an integer number (225649975).

Almost surely, 2^451299949 is an apocalyptic number.

It is an amenable number.

451299949 is a deficient number, since it is larger than the sum of its proper divisors (1).

451299949 is an equidigital number, since it uses as much as digits as its factorization.

451299949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1049760, while the sum is 52.

The square root of 451299949 is about 21243.8214311832. The cubic root of 451299949 is about 767.0466216426.

The spelling of 451299949 in words is "four hundred fifty-one million, two hundred ninety-nine thousand, nine hundred forty-nine".