354743729 has 2 divisors, whose sum is σ = 354743730. Its totient is φ = 354743728.

The previous prime is 354743693. The next prime is 354743759. The reversal of 354743729 is 927347453.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 193961329 + 160782400 = 13927^2 + 12680^2 .

It is a cyclic number.

It is not a de Polignac number, because 354743729 - 2²⁴ = 337966513 is a prime.

It is a super-2 number, since 2×354743729² = 251686226529650882, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 354743729.

It is not a weakly prime, because it can be changed into another prime (354743759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177371864 + 177371865.

It is an arithmetic number, because the mean of its divisors is an integer number (177371865).

Almost surely, 2^354743729 is an apocalyptic number.

It is an amenable number.

354743729 is a deficient number, since it is larger than the sum of its proper divisors (1).

354743729 is an equidigital number, since it uses as much as digits as its factorization.

354743729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 635040, while the sum is 44.

The square root of 354743729 is about 18834.6417274128. The cubic root of 354743729 is about 707.8994512055.

The spelling of 354743729 in words is "three hundred fifty-four million, seven hundred forty-three thousand, seven hundred twenty-nine".