396669446 has 4 divisors (see below), whose sum is σ = 595004172. Its totient is φ = 198334722.

The previous prime is 396669433. The next prime is 396669463. The reversal of 396669446 is 644966693.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 644966693 = 7 ⋅92138099.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99167360 + ... + 99167363.

It is an arithmetic number, because the mean of its divisors is an integer number (148751043).

Almost surely, 2^396669446 is an apocalyptic number.

396669446 is a deficient number, since it is larger than the sum of its proper divisors (198334726).

396669446 is a wasteful number, since it uses less digits than its factorization.

396669446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198334725.

The product of its digits is 5038848, while the sum is 53.

The square root of 396669446 is about 19916.5621029333. The cubic root of 396669446 is about 734.7556199290.

The spelling of 396669446 in words is "three hundred ninety-six million, six hundred sixty-nine thousand, four hundred forty-six".