347507989 has 8 divisors (see below), whose sum is σ = 370333440. Its totient is φ = 325325616.

The previous prime is 347507981. The next prime is 347508037. The reversal of 347507989 is 989705743.

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

It is not a de Polignac number, because 347507989 - 2³ = 347507981 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 (347507981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159654 + ... + 161815.

It is an arithmetic number, because the mean of its divisors is an integer number (46291680).

Almost surely, 2^347507989 is an apocalyptic number.

It is an amenable number.

347507989 is a deficient number, since it is larger than the sum of its proper divisors (22825451).

347507989 is a wasteful number, since it uses less digits than its factorization.

347507989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321539.

The product of its (nonzero) digits is 1905120, while the sum is 52.

The square root of 347507989 is about 18641.5661627450. The cubic root of 347507989 is about 703.0533215728.

The spelling of 347507989 in words is "three hundred forty-seven million, five hundred seven thousand, nine hundred eighty-nine".