1249211959 has 2 divisors, whose sum is σ = 1249211960. Its totient is φ = 1249211958.

The previous prime is 1249211933. The next prime is 1249212011. The reversal of 1249211959 is 9591129421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1249211959 - 2⁵ = 1249211927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1249211059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 624605979 + 624605980.

It is an arithmetic number, because the mean of its divisors is an integer number (624605980).

Almost surely, 2^1249211959 is an apocalyptic number.

1249211959 is a deficient number, since it is larger than the sum of its proper divisors (1).

1249211959 is an equidigital number, since it uses as much as digits as its factorization.

1249211959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 43.

The square root of 1249211959 is about 35344.1927195968. The cubic root of 1249211959 is about 1076.9909263797.

The spelling of 1249211959 in words is "one billion, two hundred forty-nine million, two hundred eleven thousand, nine hundred fifty-nine".