399816130573 has 2 divisors, whose sum is σ = 399816130574. Its totient is φ = 399816130572.

The previous prime is 399816130547. The next prime is 399816130583. The reversal of 399816130573 is 375031618993.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 378762700969 + 21053429604 = 615437^2 + 145098^2 .

It is an emirp because it is prime and its reverse (375031618993) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-399816130573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (399816130583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199908065286 + 199908065287.

It is an arithmetic number, because the mean of its divisors is an integer number (199908065287).

Almost surely, 2^399816130573 is an apocalyptic number.

It is an amenable number.

399816130573 is a deficient number, since it is larger than the sum of its proper divisors (1).

399816130573 is an equidigital number, since it uses as much as digits as its factorization.

399816130573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3674160, while the sum is 55.

The spelling of 399816130573 in words is "three hundred ninety-nine billion, eight hundred sixteen million, one hundred thirty thousand, five hundred seventy-three".