352649389 has 2 divisors, whose sum is σ = 352649390. Its totient is φ = 352649388.

The previous prime is 352649369. The next prime is 352649393. The reversal of 352649389 is 983946253.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 311240164 + 41409225 = 17642^2 + 6435^2 .

It is a cyclic number.

It is not a de Polignac number, because 352649389 - 2¹¹ = 352647341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (352649369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 176324694 + 176324695.

It is an arithmetic number, because the mean of its divisors is an integer number (176324695).

Almost surely, 2^352649389 is an apocalyptic number.

It is an amenable number.

352649389 is a deficient number, since it is larger than the sum of its proper divisors (1).

352649389 is an equidigital number, since it uses as much as digits as its factorization.

352649389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1399680, while the sum is 49.

The square root of 352649389 is about 18778.9613397547. The cubic root of 352649389 is about 706.5035990726.

The spelling of 352649389 in words is "three hundred fifty-two million, six hundred forty-nine thousand, three hundred eighty-nine".