399766711403 has 2 divisors, whose sum is σ = 399766711404. Its totient is φ = 399766711402.

The previous prime is 399766711397. The next prime is 399766711411. The reversal of 399766711403 is 304117667993.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (304117667993) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 399766711403 - 2³⁴ = 382586842219 is a prime.

It is not a weakly prime, because it can be changed into another prime (399766711483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199883355701 + 199883355702.

It is an arithmetic number, because the mean of its divisors is an integer number (199883355702).

Almost surely, 2^399766711403 is an apocalyptic number.

399766711403 is a deficient number, since it is larger than the sum of its proper divisors (1).

399766711403 is an equidigital number, since it uses as much as digits as its factorization.

399766711403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5143824, while the sum is 56.

The spelling of 399766711403 in words is "three hundred ninety-nine billion, seven hundred sixty-six million, seven hundred eleven thousand, four hundred three".