7449491317 has 2 divisors, whose sum is σ = 7449491318. Its totient is φ = 7449491316.

The previous prime is 7449491299. The next prime is 7449491339. The reversal of 7449491317 is 7131949447.

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., 3955026321 + 3494464996 = 62889^2 + 59114^2 .

It is a cyclic number.

It is not a de Polignac number, because 7449491317 - 2²³ = 7441102709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7449491347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3724745658 + 3724745659.

It is an arithmetic number, because the mean of its divisors is an integer number (3724745659).

Almost surely, 2^7449491317 is an apocalyptic number.

It is an amenable number.

7449491317 is a deficient number, since it is larger than the sum of its proper divisors (1).

7449491317 is an equidigital number, since it uses as much as digits as its factorization.

7449491317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 762048, while the sum is 49.

The square root of 7449491317 is about 86310.4357363581. The cubic root of 7449491317 is about 1953.0298126289.

The spelling of 7449491317 in words is "seven billion, four hundred forty-nine million, four hundred ninety-one thousand, three hundred seventeen".