354749669 has 2 divisors, whose sum is σ = 354749670. Its totient is φ = 354749668.

The previous prime is 354749653. The next prime is 354749687. The reversal of 354749669 is 966947453.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 344102500 + 10647169 = 18550^2 + 3263^2 .

It is an emirp because it is prime and its reverse (966947453) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 354749669 - 2⁴ = 354749653 is a prime.

It is a super-2 number, since 2×354749669² = 251694655311219122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 354749669.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (354749609) 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, 177374834 + 177374835.

It is an arithmetic number, because the mean of its divisors is an integer number (177374835).

Almost surely, 2^354749669 is an apocalyptic number.

It is an amenable number.

354749669 is a deficient number, since it is larger than the sum of its proper divisors (1).

354749669 is an equidigital number, since it uses as much as digits as its factorization.

354749669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4898880, while the sum is 53.

The square root of 354749669 is about 18834.7994149128. The cubic root of 354749669 is about 707.9034023200.

The spelling of 354749669 in words is "three hundred fifty-four million, seven hundred forty-nine thousand, six hundred sixty-nine".