399786470053 has 2 divisors, whose sum is σ = 399786470054. Its totient is φ = 399786470052.

The previous prime is 399786469997. The next prime is 399786470071. The reversal of 399786470053 is 350074687993.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 370537603524 + 29248866529 = 608718^2 + 171023^2 .

It is a cyclic number.

It is not a de Polignac number, because 399786470053 - 2¹³ = 399786461861 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 399786469973 and 399786470000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (399786471053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199893235026 + 199893235027.

It is an arithmetic number, because the mean of its divisors is an integer number (199893235027).

Almost surely, 2^399786470053 is an apocalyptic number.

It is an amenable number.

399786470053 is a deficient number, since it is larger than the sum of its proper divisors (1).

399786470053 is an equidigital number, since it uses as much as digits as its factorization.

399786470053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34292160, while the sum is 61.

The spelling of 399786470053 in words is "three hundred ninety-nine billion, seven hundred eighty-six million, four hundred seventy thousand, fifty-three".