396427787 has 6 divisors (see below), whose sum is σ = 461150748. Its totient is φ = 339795204.

The previous prime is 396427781. The next prime is 396427789. The reversal of 396427787 is 787724693.

It is not a de Polignac number, because 396427787 - 2¹⁶ = 396362251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (396427781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4045133 + ... + 4045230.

It is an arithmetic number, because the mean of its divisors is an integer number (76858458).

Almost surely, 2^396427787 is an apocalyptic number.

396427787 is a deficient number, since it is larger than the sum of its proper divisors (64722961).

396427787 is an equidigital number, since it uses as much as digits as its factorization.

396427787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8090377 (or 8090370 counting only the distinct ones).

The product of its digits is 3556224, while the sum is 53.

The square root of 396427787 is about 19910.4943936608. The cubic root of 396427787 is about 734.6063803206.

The spelling of 396427787 in words is "three hundred ninety-six million, four hundred twenty-seven thousand, seven hundred eighty-seven".