396984407 has 2 divisors, whose sum is σ = 396984408. Its totient is φ = 396984406.

The previous prime is 396984403. The next prime is 396984449. The reversal of 396984407 is 704489693.

It is a weak prime.

It is an emirp because it is prime and its reverse (704489693) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 396984407 - 2² = 396984403 is a prime.

It is a super-2 number, since 2×396984407² = 315193238802283298, which contains 22 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 (396984403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198492203 + 198492204.

It is an arithmetic number, because the mean of its divisors is an integer number (198492204).

Almost surely, 2^396984407 is an apocalyptic number.

396984407 is a deficient number, since it is larger than the sum of its proper divisors (1).

396984407 is an equidigital number, since it uses as much as digits as its factorization.

396984407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1306368, while the sum is 50.

The square root of 396984407 is about 19924.4675462106. The cubic root of 396984407 is about 734.9500371733.

The spelling of 396984407 in words is "three hundred ninety-six million, nine hundred eighty-four thousand, four hundred seven".