354680489 has 2 divisors, whose sum is σ = 354680490. Its totient is φ = 354680488.

The previous prime is 354680437. The next prime is 354680519. The reversal of 354680489 is 984086453.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 332515225 + 22165264 = 18235^2 + 4708^2 .

It is a cyclic number.

It is not a de Polignac number, because 354680489 - 2¹² = 354676393 is a prime.

It is not a weakly prime, because it can be changed into another prime (354680789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177340244 + 177340245.

It is an arithmetic number, because the mean of its divisors is an integer number (177340245).

Almost surely, 2^354680489 is an apocalyptic number.

It is an amenable number.

354680489 is a deficient number, since it is larger than the sum of its proper divisors (1).

354680489 is an equidigital number, since it uses as much as digits as its factorization.

354680489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 829440, while the sum is 47.

The square root of 354680489 is about 18832.9628311639. The cubic root of 354680489 is about 707.8573830700.

The spelling of 354680489 in words is "three hundred fifty-four million, six hundred eighty thousand, four hundred eighty-nine".