396440746 has 32 divisors (see below), whose sum is σ = 651184128. Its totient is φ = 179919360.

The previous prime is 396440743. The next prime is 396440773. The reversal of 396440746 is 647044693.

It is not an unprimeable number, because it can be changed into a prime (396440743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 481291 + ... + 482113.

It is an arithmetic number, because the mean of its divisors is an integer number (20349504).

Almost surely, 2^396440746 is an apocalyptic number.

396440746 is a deficient number, since it is larger than the sum of its proper divisors (254743382).

396440746 is a wasteful number, since it uses less digits than its factorization.

396440746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1126.

The product of its (nonzero) digits is 435456, while the sum is 43.

The square root of 396440746 is about 19910.8198223981. The cubic root of 396440746 is about 734.6143848557.

The spelling of 396440746 in words is "three hundred ninety-six million, four hundred forty thousand, seven hundred forty-six".