399048311 has 2 divisors, whose sum is σ = 399048312. Its totient is φ = 399048310.

The previous prime is 399048281. The next prime is 399048341. The reversal of 399048311 is 113840993.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (399048281) and next prime (399048341).

It is a cyclic number.

It is not a de Polignac number, because 399048311 - 2¹⁰ = 399047287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (399048341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199524155 + 199524156.

It is an arithmetic number, because the mean of its divisors is an integer number (199524156).

Almost surely, 2^399048311 is an apocalyptic number.

399048311 is a deficient number, since it is larger than the sum of its proper divisors (1).

399048311 is an equidigital number, since it uses as much as digits as its factorization.

399048311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 399048311 is about 19976.1936063906. The cubic root of 399048311 is about 736.2214936458.

The spelling of 399048311 in words is "three hundred ninety-nine million, forty-eight thousand, three hundred eleven".