394924969 has 4 divisors (see below), whose sum is σ = 398759296. Its totient is φ = 391090644.

The previous prime is 394924949. The next prime is 394925009. The reversal of 394924969 is 969429493.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 969429493 = 22039 ⋅43987.

It is a cyclic number.

It is not a de Polignac number, because 394924969 - 2⁹ = 394924457 is a prime.

It is a super-2 number, since 2×394924969² = 311931462279301922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394924949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1917009 + ... + 1917214.

It is an arithmetic number, because the mean of its divisors is an integer number (99689824).

Almost surely, 2^394924969 is an apocalyptic number.

It is an amenable number.

394924969 is a deficient number, since it is larger than the sum of its proper divisors (3834327).

394924969 is a wasteful number, since it uses less digits than its factorization.

394924969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3834326.

The product of its digits is 3779136, while the sum is 55.

The square root of 394924969 is about 19872.7192150445. The cubic root of 394924969 is about 733.6769317986.

The spelling of 394924969 in words is "three hundred ninety-four million, nine hundred twenty-four thousand, nine hundred sixty-nine".