396443693 has 2 divisors, whose sum is σ = 396443694. Its totient is φ = 396443692.

The previous prime is 396443681. The next prime is 396443699. The reversal of 396443693 is 396344693.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 222546724 + 173896969 = 14918^2 + 13187^2 .

It is a cyclic number.

It is not a de Polignac number, because 396443693 - 2¹² = 396439597 is a prime.

It is a super-3 number, since 3×396443693³ (a number of 27 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (396443699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198221846 + 198221847.

It is an arithmetic number, because the mean of its divisors is an integer number (198221847).

Almost surely, 2^396443693 is an apocalyptic number.

It is an amenable number.

396443693 is a deficient number, since it is larger than the sum of its proper divisors (1).

396443693 is an equidigital number, since it uses as much as digits as its factorization.

396443693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1259712, while the sum is 47.

The square root of 396443693 is about 19910.8938272494. The cubic root of 396443693 is about 734.6162051388.

The spelling of 396443693 in words is "three hundred ninety-six million, four hundred forty-three thousand, six hundred ninety-three".