396637073 has 4 divisors (see below), whose sum is σ = 453299520. Its totient is φ = 339974628.

The previous prime is 396637063. The next prime is 396637079. The reversal of 396637073 is 370736693.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 396637073 - 2⁶ = 396637009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (396637079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28331213 + ... + 28331226.

It is an arithmetic number, because the mean of its divisors is an integer number (113324880).

Almost surely, 2^396637073 is an apocalyptic number.

It is an amenable number.

396637073 is a deficient number, since it is larger than the sum of its proper divisors (56662447).

396637073 is an equidigital number, since it uses as much as digits as its factorization.

396637073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56662446.

The product of its (nonzero) digits is 428652, while the sum is 44.

The square root of 396637073 is about 19915.7493707869. The cubic root of 396637073 is about 734.7356310852.

The spelling of 396637073 in words is "three hundred ninety-six million, six hundred thirty-seven thousand, seventy-three".