343977797 has 2 divisors, whose sum is σ = 343977798. Its totient is φ = 343977796.

The previous prime is 343977793. The next prime is 343977833. The reversal of 343977797 is 797779343.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 229037956 + 114939841 = 15134^2 + 10721^2 .

It is a cyclic number.

It is not a de Polignac number, because 343977797 - 2² = 343977793 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343977793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171988898 + 171988899.

It is an arithmetic number, because the mean of its divisors is an integer number (171988899).

Almost surely, 2^343977797 is an apocalyptic number.

It is an amenable number.

343977797 is a deficient number, since it is larger than the sum of its proper divisors (1).

343977797 is an equidigital number, since it uses as much as digits as its factorization.

343977797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7001316, while the sum is 56.

The square root of 343977797 is about 18546.6384285670. The cubic root of 343977797 is about 700.6645369570.

The spelling of 343977797 in words is "three hundred forty-three million, nine hundred seventy-seven thousand, seven hundred ninety-seven".