403819849 has 2 divisors, whose sum is σ = 403819850. Its totient is φ = 403819848.

The previous prime is 403819807. The next prime is 403819903. The reversal of 403819849 is 948918304.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 311275449 + 92544400 = 17643^2 + 9620^2 .

It is a cyclic number.

It is not a de Polignac number, because 403819849 - 2⁹ = 403819337 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 403819799 and 403819808.

It is not a weakly prime, because it can be changed into another prime (403819049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201909924 + 201909925.

It is an arithmetic number, because the mean of its divisors is an integer number (201909925).

Almost surely, 2^403819849 is an apocalyptic number.

It is an amenable number.

403819849 is a deficient number, since it is larger than the sum of its proper divisors (1).

403819849 is an equidigital number, since it uses as much as digits as its factorization.

403819849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 403819849 is about 20095.2693189218. The cubic root of 403819849 is about 739.1442805080.

The spelling of 403819849 in words is "four hundred three million, eight hundred nineteen thousand, eight hundred forty-nine".