394553345 has 16 divisors (see below), whose sum is σ = 479157120. Its totient is φ = 311862144.

The previous prime is 394553309. The next prime is 394553377. The reversal of 394553345 is 543355493.

It is a cyclic number.

It is not a de Polignac number, because 394553345 - 2¹⁶ = 394487809 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 416162 + ... + 417108.

It is an arithmetic number, because the mean of its divisors is an integer number (29947320).

Almost surely, 2^394553345 is an apocalyptic number.

It is an amenable number.

394553345 is a deficient number, since it is larger than the sum of its proper divisors (84603775).

394553345 is a wasteful number, since it uses less digits than its factorization.

394553345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1864.

The product of its digits is 486000, while the sum is 41.

The square root of 394553345 is about 19863.3669099677. The cubic root of 394553345 is about 733.4467298244.

The spelling of 394553345 in words is "three hundred ninety-four million, five hundred fifty-three thousand, three hundred forty-five".