354997129 has 4 divisors (see below), whose sum is σ = 364591684. Its totient is φ = 345402576.

The previous prime is 354997117. The next prime is 354997133. The reversal of 354997129 is 921799453.

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 314991504 + 40005625 = 17748^2 + 6325^2 .

It is a cyclic number.

It is not a de Polignac number, because 354997129 - 2⁷ = 354997001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (354997109) 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 in 3 ways as a sum of consecutive naturals, for example, 4797222 + ... + 4797295.

It is an arithmetic number, because the mean of its divisors is an integer number (91147921).

Almost surely, 2^354997129 is an apocalyptic number.

It is an amenable number.

354997129 is a deficient number, since it is larger than the sum of its proper divisors (9594555).

354997129 is an equidigital number, since it uses as much as digits as its factorization.

354997129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9594554.

The product of its digits is 612360, while the sum is 49.

The square root of 354997129 is about 18841.3674928334. The cubic root of 354997129 is about 708.0679663065.

The spelling of 354997129 in words is "three hundred fifty-four million, nine hundred ninety-seven thousand, one hundred twenty-nine".