399067305 has 96 divisors (see below), whose sum is σ = 810095616. Its totient is φ = 164166912.

The previous prime is 399067301. The next prime is 399067351. The reversal of 399067305 is 503760993.

It is not a de Polignac number, because 399067305 - 2² = 399067301 is a prime.

It is not an unprimeable number, because it can be changed into a prime (399067301) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 762774 + ... + 763296.

It is an arithmetic number, because the mean of its divisors is an integer number (8438496).

Almost surely, 2^399067305 is an apocalyptic number.

399067305 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

399067305 is an abundant number, since it is smaller than the sum of its proper divisors (411028311).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

399067305 is a wasteful number, since it uses less digits than its factorization.

399067305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607 (or 594 counting only the distinct ones).

The product of its (nonzero) digits is 153090, while the sum is 42.

The square root of 399067305 is about 19976.6690166304. The cubic root of 399067305 is about 736.2331744113.

The spelling of 399067305 in words is "three hundred ninety-nine million, sixty-seven thousand, three hundred five".