354043693 has 2 divisors, whose sum is σ = 354043694. Its totient is φ = 354043692.

The previous prime is 354043681. The next prime is 354043727. The reversal of 354043693 is 396340453.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196616484 + 157427209 = 14022^2 + 12547^2 .

It is an emirp because it is prime and its reverse (396340453) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 354043693 - 2⁹ = 354043181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (354043493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177021846 + 177021847.

It is an arithmetic number, because the mean of its divisors is an integer number (177021847).

Almost surely, 2^354043693 is an apocalyptic number.

It is an amenable number.

354043693 is a deficient number, since it is larger than the sum of its proper divisors (1).

354043693 is an equidigital number, since it uses as much as digits as its factorization.

354043693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 37.

The square root of 354043693 is about 18816.0488147751. The cubic root of 354043693 is about 707.4334984754.

The spelling of 354043693 in words is "three hundred fifty-four million, forty-three thousand, six hundred ninety-three".