396247406 has 4 divisors (see below), whose sum is σ = 594371112. Its totient is φ = 198123702.

The previous prime is 396247367. The next prime is 396247409. The reversal of 396247406 is 604742693.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396247409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99061850 + ... + 99061853.

It is an arithmetic number, because the mean of its divisors is an integer number (148592778).

Almost surely, 2^396247406 is an apocalyptic number.

396247406 is a deficient number, since it is larger than the sum of its proper divisors (198123706).

396247406 is a wasteful number, since it uses less digits than its factorization.

396247406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198123705.

The product of its (nonzero) digits is 217728, while the sum is 41.

The square root of 396247406 is about 19905.9640811491. The cubic root of 396247406 is about 734.4949441896.

The spelling of 396247406 in words is "three hundred ninety-six million, two hundred forty-seven thousand, four hundred six".