399484535 has 4 divisors (see below), whose sum is σ = 479381448. Its totient is φ = 319587624.

The previous prime is 399484529. The next prime is 399484549. The reversal of 399484535 is 535484993.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 535484993 = 18181 ⋅29453.

It is a cyclic number.

It is not a de Polignac number, because 399484535 - 2¹⁸ = 399222391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39948449 + ... + 39948458.

It is an arithmetic number, because the mean of its divisors is an integer number (119845362).

Almost surely, 2^399484535 is an apocalyptic number.

399484535 is a deficient number, since it is larger than the sum of its proper divisors (79896913).

399484535 is an equidigital number, since it uses as much as digits as its factorization.

399484535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79896912.

The product of its digits is 2332800, while the sum is 50.

The square root of 399484535 is about 19987.1092206952. The cubic root of 399484535 is about 736.4896654615.

The spelling of 399484535 in words is "three hundred ninety-nine million, four hundred eighty-four thousand, five hundred thirty-five".