349557789 has 16 divisors (see below), whose sum is σ = 532920960. Its totient is φ = 199649280.

The previous prime is 349557787. The next prime is 349557797. The reversal of 349557789 is 987755943.

It is not a de Polignac number, because 349557789 - 2¹ = 349557787 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349557787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79357 + ... + 83645.

It is an arithmetic number, because the mean of its divisors is an integer number (33307560).

Almost surely, 2^349557789 is an apocalyptic number.

It is an amenable number.

349557789 is a deficient number, since it is larger than the sum of its proper divisors (183363171).

349557789 is a wasteful number, since it uses less digits than its factorization.

349557789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8180.

The product of its digits is 9525600, while the sum is 57.

The square root of 349557789 is about 18696.4646123271. The cubic root of 349557789 is about 704.4329487854.

The spelling of 349557789 in words is "three hundred forty-nine million, five hundred fifty-seven thousand, seven hundred eighty-nine".