340470989 has 4 divisors (see below), whose sum is σ = 340578720. Its totient is φ = 340363260.

The previous prime is 340470973. The next prime is 340471009. The reversal of 340470989 is 989074043.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 989074043 = 173 ⋅5717191.

It is a cyclic number.

It is not a de Polignac number, because 340470989 - 2⁴ = 340470973 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 (340470919) 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, 48977 + ... + 55494.

It is an arithmetic number, because the mean of its divisors is an integer number (85144680).

Almost surely, 2^340470989 is an apocalyptic number.

It is an amenable number.

340470989 is a deficient number, since it is larger than the sum of its proper divisors (107731).

340470989 is a wasteful number, since it uses less digits than its factorization.

340470989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107730.

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

The square root of 340470989 is about 18451.8559771097. The cubic root of 340470989 is about 698.2753386194.

The spelling of 340470989 in words is "three hundred forty million, four hundred seventy thousand, nine hundred eighty-nine".