396976739 has 2 divisors, whose sum is σ = 396976740. Its totient is φ = 396976738.

The previous prime is 396976717. The next prime is 396976771. The reversal of 396976739 is 937679693.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-396976739 is a prime.

It is not a weakly prime, because it can be changed into another prime (396976039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198488369 + 198488370.

It is an arithmetic number, because the mean of its divisors is an integer number (198488370).

Almost surely, 2^396976739 is an apocalyptic number.

396976739 is a deficient number, since it is larger than the sum of its proper divisors (1).

396976739 is an equidigital number, since it uses as much as digits as its factorization.

396976739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11573604, while the sum is 59.

The square root of 396976739 is about 19924.2751185583. The cubic root of 396976739 is about 734.9453051376.

It can be divided in two parts, 3969 and 76739, that added together give a palindrome (80708).

The spelling of 396976739 in words is "three hundred ninety-six million, nine hundred seventy-six thousand, seven hundred thirty-nine".