354421897 has 2 divisors, whose sum is σ = 354421898. Its totient is φ = 354421896.

The previous prime is 354421849. The next prime is 354421913. The reversal of 354421897 is 798124453.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 228735376 + 125686521 = 15124^2 + 11211^2 .

It is a cyclic number.

It is not a de Polignac number, because 354421897 - 2²⁷ = 220204169 is a prime.

It is a super-2 number, since 2×354421897² = 251229762146157218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (354421807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177210948 + 177210949.

It is an arithmetic number, because the mean of its divisors is an integer number (177210949).

Almost surely, 2^354421897 is an apocalyptic number.

It is an amenable number.

354421897 is a deficient number, since it is larger than the sum of its proper divisors (1).

354421897 is an equidigital number, since it uses as much as digits as its factorization.

354421897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 43.

The square root of 354421897 is about 18826.0961699445. The cubic root of 354421897 is about 707.6853119943.

The spelling of 354421897 in words is "three hundred fifty-four million, four hundred twenty-one thousand, eight hundred ninety-seven".