394194245 has 16 divisors (see below), whose sum is σ = 491339520. Its totient is φ = 303240000.

The previous prime is 394194239. The next prime is 394194257. The reversal of 394194245 is 542491493.

It is not a de Polignac number, because 394194245 - 2¹⁰ = 394193221 is a prime.

It is a super-2 number, since 2×394194245² = 310778205582240050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30980 + ... + 41810.

It is an arithmetic number, because the mean of its divisors is an integer number (30708720).

Almost surely, 2^394194245 is an apocalyptic number.

It is an amenable number.

394194245 is a deficient number, since it is larger than the sum of its proper divisors (97145275).

394194245 is a wasteful number, since it uses less digits than its factorization.

394194245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11116.

The product of its digits is 155520, while the sum is 41.

The square root of 394194245 is about 19854.3255992240. The cubic root of 394194245 is about 733.2241484598.

The spelling of 394194245 in words is "three hundred ninety-four million, one hundred ninety-four thousand, two hundred forty-five".