354990985 has 4 divisors (see below), whose sum is σ = 425989188. Its totient is φ = 283992784.

The previous prime is 354990971. The next prime is 354991027. The reversal of 354990985 is 589099453.

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 58049161 + 296941824 = 7619^2 + 17232^2 .

It is a cyclic number.

It is not a de Polignac number, because 354990985 - 2¹¹ = 354988937 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35499094 + ... + 35499103.

It is an arithmetic number, because the mean of its divisors is an integer number (106497297).

Almost surely, 2^354990985 is an apocalyptic number.

It is an amenable number.

354990985 is a deficient number, since it is larger than the sum of its proper divisors (70998203).

354990985 is an equidigital number, since it uses as much as digits as its factorization.

354990985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70998202.

The product of its (nonzero) digits is 1749600, while the sum is 52.

The square root of 354990985 is about 18841.2044466377. The cubic root of 354990985 is about 708.0638813959.

The spelling of 354990985 in words is "three hundred fifty-four million, nine hundred ninety thousand, nine hundred eighty-five".