9999972413 has 2 divisors, whose sum is σ = 9999972414. Its totient is φ = 9999972412.

The previous prime is 9999972401. The next prime is 9999972431. The reversal of 9999972413 is 3142799999.

Together with next prime (9999972431) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9789519364 + 210453049 = 98942^2 + 14507^2 .

It is an emirp because it is prime and its reverse (3142799999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9999972413 - 2⁶ = 9999972349 is a prime.

It is a super-2 number, since 2×9999972413² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9999972013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4999986206 + 4999986207.

It is an arithmetic number, because the mean of its divisors is an integer number (4999986207).

Almost surely, 2^9999972413 is an apocalyptic number.

It is an amenable number.

9999972413 is a deficient number, since it is larger than the sum of its proper divisors (1).

9999972413 is an equidigital number, since it uses as much as digits as its factorization.

9999972413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9920232, while the sum is 62.

The square root of 9999972413 is about 99999.8620649049. The cubic root of 9999972413 is about 2154.4327088837.

The spelling of 9999972413 in words is "nine billion, nine hundred ninety-nine million, nine hundred seventy-two thousand, four hundred thirteen".