396669447 has 8 divisors (see below), whose sum is σ = 587658480. Its totient is φ = 264446280.

The previous prime is 396669433. The next prime is 396669463. The reversal of 396669447 is 744966693.

It is not a de Polignac number, because 396669447 - 2¹⁰ = 396668423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 396669393 and 396669402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396664447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7345704 + ... + 7345757.

It is an arithmetic number, because the mean of its divisors is an integer number (73457310).

Almost surely, 2^396669447 is an apocalyptic number.

396669447 is a deficient number, since it is larger than the sum of its proper divisors (190989033).

396669447 is a wasteful number, since it uses less digits than its factorization.

396669447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14691470 (or 14691464 counting only the distinct ones).

The product of its digits is 5878656, while the sum is 54.

The square root of 396669447 is about 19916.5621280381. The cubic root of 396669447 is about 734.7556205464.

The spelling of 396669447 in words is "three hundred ninety-six million, six hundred sixty-nine thousand, four hundred forty-seven".