7804906399 has 2 divisors, whose sum is σ = 7804906400. Its totient is φ = 7804906398.

The previous prime is 7804906379. The next prime is 7804906409. The reversal of 7804906399 is 9936094087.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7804906399 - 2⁵ = 7804906367 is a prime.

It is a super-2 number, since 2×7804906399² (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 (7804906379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3902453199 + 3902453200.

It is an arithmetic number, because the mean of its divisors is an integer number (3902453200).

Almost surely, 2^7804906399 is an apocalyptic number.

7804906399 is a deficient number, since it is larger than the sum of its proper divisors (1).

7804906399 is an equidigital number, since it uses as much as digits as its factorization.

7804906399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2939328, while the sum is 55.

The square root of 7804906399 is about 88345.3813110793. The cubic root of 7804906399 is about 1983.6082217456.

The spelling of 7804906399 in words is "seven billion, eight hundred four million, nine hundred six thousand, three hundred ninety-nine".