1249799 has 2 divisors, whose sum is σ = 1249800. Its totient is φ = 1249798.

The previous prime is 1249757. The next prime is 1249811. The reversal of 1249799 is 9979421.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1249799 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1249739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 624899 + 624900.

It is an arithmetic number, because the mean of its divisors is an integer number (624900).

2^1249799 is an apocalyptic number.

1249799 is a deficient number, since it is larger than the sum of its proper divisors (1).

1249799 is an equidigital number, since it uses as much as digits as its factorization.

1249799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824, while the sum is 41.

The square root of 1249799 is about 1117.9440952033. The cubic root of 1249799 is about 107.7159603071.

It can be divided in two parts, 1249 and 799, that added together give a 11-th power (2048 = 2¹¹).

The spelling of 1249799 in words is "one million, two hundred forty-nine thousand, seven hundred ninety-nine".