349274587 has 4 divisors (see below), whose sum is σ = 367657480. Its totient is φ = 330891696.

The previous prime is 349274581. The next prime is 349274591. The reversal of 349274587 is 785472943.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 785472943 = 179 ⋅4388117.

It is a cyclic number.

It is not a de Polignac number, because 349274587 - 2¹⁹ = 348750299 is a prime.

It is an alternating number because its digits alternate between odd and even.

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 349274587.

It is not an unprimeable number, because it can be changed into a prime (349274581) 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, 9191418 + ... + 9191455.

It is an arithmetic number, because the mean of its divisors is an integer number (91914370).

Almost surely, 2^349274587 is an apocalyptic number.

349274587 is a deficient number, since it is larger than the sum of its proper divisors (18382893).

349274587 is a wasteful number, since it uses less digits than its factorization.

349274587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18382892.

The product of its digits is 1693440, while the sum is 49.

The square root of 349274587 is about 18688.8893998547. The cubic root of 349274587 is about 704.2426600587.

The spelling of 349274587 in words is "three hundred forty-nine million, two hundred seventy-four thousand, five hundred eighty-seven".