354689897 has 2 divisors, whose sum is σ = 354689898. Its totient is φ = 354689896.

The previous prime is 354689827. The next prime is 354689899. The reversal of 354689897 is 798986453.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 354342976 + 346921 = 18824^2 + 589^2 .

It is a cyclic number.

It is not a de Polignac number, because 354689897 - 2⁸ = 354689641 is a prime.

Together with 354689899, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (354689899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177344948 + 177344949.

It is an arithmetic number, because the mean of its divisors is an integer number (177344949).

Almost surely, 2^354689897 is an apocalyptic number.

It is an amenable number.

354689897 is a deficient number, since it is larger than the sum of its proper divisors (1).

354689897 is an equidigital number, since it uses as much as digits as its factorization.

354689897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13063680, while the sum is 59.

The square root of 354689897 is about 18833.2126043328. The cubic root of 354689897 is about 707.8636417202.

The spelling of 354689897 in words is "three hundred fifty-four million, six hundred eighty-nine thousand, eight hundred ninety-seven".