408793338173947 has 2 divisors, whose sum is σ = 408793338173948. Its totient is φ = 408793338173946.

The previous prime is 408793338173893. The next prime is 408793338173999. The reversal of 408793338173947 is 749371833397804.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-408793338173947 is a prime.

It is a super-2 number, since 2×408793338173947² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (408793338173447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204396669086973 + 204396669086974.

It is an arithmetic number, because the mean of its divisors is an integer number (204396669086974).

Almost surely, 2^{408793338173947} is an apocalyptic number.

408793338173947 is a deficient number, since it is larger than the sum of its proper divisors (1).

408793338173947 is an equidigital number, since it uses as much as digits as its factorization.

408793338173947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304433152, while the sum is 76.

The spelling of 408793338173947 in words is "four hundred eight trillion, seven hundred ninety-three billion, three hundred thirty-eight million, one hundred seventy-three thousand, nine hundred forty-seven".