354864869 has 4 divisors (see below), whose sum is σ = 358120620. Its totient is φ = 351609120.

The previous prime is 354864859. The next prime is 354864871. The reversal of 354864869 is 968468453.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 968468453 = 4549 ⋅212897.

It can be written as a sum of positive squares in 2 ways, for example, as 321664225 + 33200644 = 17935^2 + 5762^2 .

It is a cyclic number.

It is not a de Polignac number, because 354864869 - 2²⁰ = 353816293 is a prime.

It is a super-2 number, since 2×354864869² = 251858150500774322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 354864869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (354864859) 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, 1627712 + ... + 1627929.

It is an arithmetic number, because the mean of its divisors is an integer number (89530155).

Almost surely, 2^354864869 is an apocalyptic number.

It is an amenable number.

354864869 is a deficient number, since it is larger than the sum of its proper divisors (3255751).

354864869 is a wasteful number, since it uses less digits than its factorization.

354864869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3255750.

The product of its digits is 4976640, while the sum is 53.

The square root of 354864869 is about 18837.8573356951. The cubic root of 354864869 is about 707.9800212744.

The spelling of 354864869 in words is "three hundred fifty-four million, eight hundred sixty-four thousand, eight hundred sixty-nine".