354099689 has 4 divisors (see below), whose sum is σ = 357348420. Its totient is φ = 350850960.

The previous prime is 354099671. The next prime is 354099703. The reversal of 354099689 is 986990453.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 298149289 + 55950400 = 17267^2 + 7480^2 .

It is a cyclic number.

It is not a de Polignac number, because 354099689 - 2²⁴ = 337322473 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 354099689.

It is not an unprimeable number, because it can be changed into a prime (354099659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1624202 + ... + 1624419.

It is an arithmetic number, because the mean of its divisors is an integer number (89337105).

Almost surely, 2^354099689 is an apocalyptic number.

It is an amenable number.

354099689 is a deficient number, since it is larger than the sum of its proper divisors (3248731).

354099689 is a wasteful number, since it uses less digits than its factorization.

354099689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3248730.

The product of its (nonzero) digits is 2099520, while the sum is 53.

The square root of 354099689 is about 18817.5367410296. The cubic root of 354099689 is about 707.4707927027.

The spelling of 354099689 in words is "three hundred fifty-four million, ninety-nine thousand, six hundred eighty-nine".