1247350499 has 2 divisors, whose sum is σ = 1247350500. Its totient is φ = 1247350498.

The previous prime is 1247350463. The next prime is 1247350501. The reversal of 1247350499 is 9940537421.

It is a strong prime.

It is an emirp because it is prime and its reverse (9940537421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1247350499 - 2²⁸ = 978915043 is a prime.

Together with 1247350501, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1247356499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 623675249 + 623675250.

It is an arithmetic number, because the mean of its divisors is an integer number (623675250).

Almost surely, 2^1247350499 is an apocalyptic number.

1247350499 is a deficient number, since it is larger than the sum of its proper divisors (1).

1247350499 is an equidigital number, since it uses as much as digits as its factorization.

1247350499 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 1247350499 is about 35317.8495806299. The cubic root of 1247350499 is about 1076.4557163972.

The spelling of 1247350499 in words is "one billion, two hundred forty-seven million, three hundred fifty thousand, four hundred ninety-nine".