396487743 has 8 divisors (see below), whose sum is σ = 528756528. Its totient is φ = 264272064.

The previous prime is 396487699. The next prime is 396487769. The reversal of 396487743 is 347784693.

It is a happy number.

It is a Cunningham number, because it is equal to 19912²-1.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 396487743 - 2¹⁶ = 396422207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396487943) 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, 9955 + ... + 29867.

It is an arithmetic number, because the mean of its divisors is an integer number (66094566).

Almost surely, 2^396487743 is an apocalyptic number.

396487743 is a deficient number, since it is larger than the sum of its proper divisors (132268785).

396487743 is a wasteful number, since it uses less digits than its factorization.

396487743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26553.

The product of its digits is 3048192, while the sum is 51.

The square root of 396487743 is about 19911.9999748895. Note that the first 4 decimals coincide. The cubic root of 396487743 is about 734.6434125716.

The spelling of 396487743 in words is "three hundred ninety-six million, four hundred eighty-seven thousand, seven hundred forty-three".