349744987 has 8 divisors (see below), whose sum is σ = 351445536. Its totient is φ = 348049152.

The previous prime is 349744981. The next prime is 349744999. The reversal of 349744987 is 789447943.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 349744987 - 2¹⁹ = 349220699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (349744981) 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 7 ways as a sum of consecutive naturals, for example, 312553 + ... + 313669.

It is an arithmetic number, because the mean of its divisors is an integer number (43930692).

Almost surely, 2^349744987 is an apocalyptic number.

349744987 is a deficient number, since it is larger than the sum of its proper divisors (1700549).

349744987 is a wasteful number, since it uses less digits than its factorization.

349744987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2357.

The product of its digits is 6096384, while the sum is 55.

The square root of 349744987 is about 18701.4701828493. The cubic root of 349744987 is about 704.5586742120.

It can be divided in two parts, 3497 and 44987, that added together give a palindrome (48484).

The spelling of 349744987 in words is "three hundred forty-nine million, seven hundred forty-four thousand, nine hundred eighty-seven".