403806678089 has 2 divisors, whose sum is σ = 403806678090. Its totient is φ = 403806678088.

The previous prime is 403806678073. The next prime is 403806678091. The reversal of 403806678089 is 980876608304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 230174455225 + 173632222864 = 479765^2 + 416692^2 .

It is a cyclic number.

It is not a de Polignac number, because 403806678089 - 2⁴ = 403806678073 is a prime.

Together with 403806678091, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (403806678049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201903339044 + 201903339045.

It is an arithmetic number, because the mean of its divisors is an integer number (201903339045).

Almost surely, 2^403806678089 is an apocalyptic number.

It is an amenable number.

403806678089 is a deficient number, since it is larger than the sum of its proper divisors (1).

403806678089 is an equidigital number, since it uses as much as digits as its factorization.

403806678089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13934592, while the sum is 59.

The spelling of 403806678089 in words is "four hundred three billion, eight hundred six million, six hundred seventy-eight thousand, eighty-nine".