247862401 has 2 divisors, whose sum is σ = 247862402. Its totient is φ = 247862400.

The previous prime is 247862387. The next prime is 247862411. The reversal of 247862401 is 104268742.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 148840000 + 99022401 = 12200^2 + 9951^2 .

It is a cyclic number.

It is not a de Polignac number, because 247862401 - 2⁵ = 247862369 is a prime.

It is a super-2 number, since 2×247862401² = 122871539658969602, which contains 22 as substring.

It is equal to p_13568650 and since 247862401 and 13568650 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (247862411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123931200 + 123931201.

It is an arithmetic number, because the mean of its divisors is an integer number (123931201).

Almost surely, 2^247862401 is an apocalyptic number.

It is an amenable number.

247862401 is a deficient number, since it is larger than the sum of its proper divisors (1).

247862401 is an equidigital number, since it uses as much as digits as its factorization.

247862401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 247862401 is about 15743.6463692500. The cubic root of 247862401 is about 628.1599125203.

The spelling of 247862401 in words is "two hundred forty-seven million, eight hundred sixty-two thousand, four hundred one".