1249964453 has 2 divisors, whose sum is σ = 1249964454. Its totient is φ = 1249964452.

The previous prime is 1249964369. The next prime is 1249964459. The reversal of 1249964453 is 3544699421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 894189409 + 355775044 = 29903^2 + 18862^2 .

It is a cyclic number.

It is not a de Polignac number, because 1249964453 - 2⁸ = 1249964197 is a prime.

It is a super-2 number, since 2×1249964453² = 3124822267527178418, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1249964398 and 1249964407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1249964459) 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 as a sum of consecutive naturals, namely, 624982226 + 624982227.

It is an arithmetic number, because the mean of its divisors is an integer number (624982227).

Almost surely, 2^1249964453 is an apocalyptic number.

It is an amenable number.

1249964453 is a deficient number, since it is larger than the sum of its proper divisors (1).

1249964453 is an equidigital number, since it uses as much as digits as its factorization.

1249964453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 933120, while the sum is 47.

The square root of 1249964453 is about 35354.8363452583. The cubic root of 1249964453 is about 1077.2071337605.

The spelling of 1249964453 in words is "one billion, two hundred forty-nine million, nine hundred sixty-four thousand, four hundred fifty-three".