354512989 has 2 divisors, whose sum is σ = 354512990. Its totient is φ = 354512988.

The previous prime is 354512987. The next prime is 354513031. The reversal of 354512989 is 989215453.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 234610489 + 119902500 = 15317^2 + 10950^2 .

It is a cyclic number.

It is not a de Polignac number, because 354512989 - 2¹ = 354512987 is a prime.

It is a super-3 number, since 3×354512989³ (a number of 27 digits) contains 333 as substring.

Together with 354512987, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (354512987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177256494 + 177256495.

It is an arithmetic number, because the mean of its divisors is an integer number (177256495).

Almost surely, 2^354512989 is an apocalyptic number.

It is an amenable number.

354512989 is a deficient number, since it is larger than the sum of its proper divisors (1).

354512989 is an equidigital number, since it uses as much as digits as its factorization.

354512989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 388800, while the sum is 46.

The square root of 354512989 is about 18828.5153158713. The cubic root of 354512989 is about 707.7459355515.

The spelling of 354512989 in words is "three hundred fifty-four million, five hundred twelve thousand, nine hundred eighty-nine".