247118413 has 2 divisors, whose sum is σ = 247118414. Its totient is φ = 247118412.

The previous prime is 247118387. The next prime is 247118419. The reversal of 247118413 is 314811742.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 159845449 + 87272964 = 12643^2 + 9342^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-247118413 is a prime.

It is a super-2 number, since 2×247118413² = 122135020087277138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (247118419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123559206 + 123559207.

It is an arithmetic number, because the mean of its divisors is an integer number (123559207).

Almost surely, 2^247118413 is an apocalyptic number.

It is an amenable number.

247118413 is a deficient number, since it is larger than the sum of its proper divisors (1).

247118413 is an equidigital number, since it uses as much as digits as its factorization.

247118413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5376, while the sum is 31.

The square root of 247118413 is about 15720.0004134860. Note that the first 3 decimals coincide. The cubic root of 247118413 is about 627.5307841387.

It can be divided in two parts, 24711 and 8413, that added together give a square (33124 = 182²).

The spelling of 247118413 in words is "two hundred forty-seven million, one hundred eighteen thousand, four hundred thirteen".