399823053 has 16 divisors (see below), whose sum is σ = 635744256. Its totient is φ = 218536560.

The previous prime is 399823049. The next prime is 399823057. The reversal of 399823053 is 350328993.

It is an interprime number because it is at equal distance from previous prime (399823049) and next prime (399823057).

It is not a de Polignac number, because 399823053 - 2² = 399823049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 399822996 and 399823014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399823057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 413413 + ... + 414378.

It is an arithmetic number, because the mean of its divisors is an integer number (39734016).

Almost surely, 2^399823053 is an apocalyptic number.

It is an amenable number.

399823053 is a deficient number, since it is larger than the sum of its proper divisors (235921203).

399823053 is a wasteful number, since it uses less digits than its factorization.

399823053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827824.

The product of its (nonzero) digits is 174960, while the sum is 42.

The square root of 399823053 is about 19995.5758356692. The cubic root of 399823053 is about 736.6976373167.

The spelling of 399823053 in words is "three hundred ninety-nine million, eight hundred twenty-three thousand, fifty-three".