399714474787 has 2 divisors, whose sum is σ = 399714474788. Its totient is φ = 399714474786.

The previous prime is 399714474769. The next prime is 399714474829. The reversal of 399714474787 is 787474417993.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-399714474787 is a prime.

It is a super-2 number, since 2×399714474787² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (399714474487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199857237393 + 199857237394.

It is an arithmetic number, because the mean of its divisors is an integer number (199857237394).

Almost surely, 2^399714474787 is an apocalyptic number.

399714474787 is a deficient number, since it is larger than the sum of its proper divisors (1).

399714474787 is an equidigital number, since it uses as much as digits as its factorization.

399714474787 is an evil number, because the sum of its binary digits is even.

The product of its digits is 298722816, while the sum is 70.

The spelling of 399714474787 in words is "three hundred ninety-nine billion, seven hundred fourteen million, four hundred seventy-four thousand, seven hundred eighty-seven".