349723573 has 2 divisors, whose sum is σ = 349723574. Its totient is φ = 349723572.

The previous prime is 349723567. The next prime is 349723589. The reversal of 349723573 is 375327943.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 328406884 + 21316689 = 18122^2 + 4617^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-349723573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (349723523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174861786 + 174861787.

It is an arithmetic number, because the mean of its divisors is an integer number (174861787).

Almost surely, 2^349723573 is an apocalyptic number.

It is an amenable number.

349723573 is a deficient number, since it is larger than the sum of its proper divisors (1).

349723573 is an equidigital number, since it uses as much as digits as its factorization.

349723573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 476280, while the sum is 43.

The square root of 349723573 is about 18700.8976522519. The cubic root of 349723573 is about 704.5442944706.

The spelling of 349723573 in words is "three hundred forty-nine million, seven hundred twenty-three thousand, five hundred seventy-three".