24240400397 has 2 divisors, whose sum is σ = 24240400398. Its totient is φ = 24240400396.

The previous prime is 24240400391. The next prime is 24240400427. The reversal of 24240400397 is 79300404242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13009911721 + 11230488676 = 114061^2 + 105974^2 .

It is a cyclic number.

It is not a de Polignac number, because 24240400397 - 2¹⁴ = 24240384013 is a prime.

It is a super-2 number, since 2×24240400397² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24240400391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12120200198 + 12120200199.

It is an arithmetic number, because the mean of its divisors is an integer number (12120200199).

Almost surely, 2^24240400397 is an apocalyptic number.

It is an amenable number.

24240400397 is a deficient number, since it is larger than the sum of its proper divisors (1).

24240400397 is an equidigital number, since it uses as much as digits as its factorization.

24240400397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 35.

The spelling of 24240400397 in words is "twenty-four billion, two hundred forty million, four hundred thousand, three hundred ninety-seven".