354173749 has 2 divisors, whose sum is σ = 354173750. Its totient is φ = 354173748.

The previous prime is 354173713. The next prime is 354173779. The reversal of 354173749 is 947371453.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 208802500 + 145371249 = 14450^2 + 12057^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-354173749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (354173779) 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, 177086874 + 177086875.

It is an arithmetic number, because the mean of its divisors is an integer number (177086875).

Almost surely, 2^354173749 is an apocalyptic number.

It is an amenable number.

354173749 is a deficient number, since it is larger than the sum of its proper divisors (1).

354173749 is an equidigital number, since it uses as much as digits as its factorization.

354173749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 317520, while the sum is 43.

The square root of 354173749 is about 18819.5044833811. The cubic root of 354173749 is about 707.5201118033.

The spelling of 354173749 in words is "three hundred fifty-four million, one hundred seventy-three thousand, seven hundred forty-nine".