349904087 has 4 divisors (see below), whose sum is σ = 376819800. Its totient is φ = 322988376.

The previous prime is 349904077. The next prime is 349904101. The reversal of 349904087 is 780409943.

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

It is a cyclic number.

It is not a de Polignac number, because 349904087 - 2⁸ = 349903831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349904077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13457837 + ... + 13457862.

It is an arithmetic number, because the mean of its divisors is an integer number (94204950).

Almost surely, 2^349904087 is an apocalyptic number.

349904087 is a deficient number, since it is larger than the sum of its proper divisors (26915713).

349904087 is a wasteful number, since it uses less digits than its factorization.

349904087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26915712.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 349904087 is about 18705.7233754806. The cubic root of 349904087 is about 704.6654932717.

The spelling of 349904087 in words is "three hundred forty-nine million, nine hundred four thousand, eighty-seven".