340604420999 has 4 divisors (see below), whose sum is σ = 340606020336. Its totient is φ = 340602821664.

The previous prime is 340604420927. The next prime is 340604421007. The reversal of 340604420999 is 999024406043.

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 340604420999 - 2¹² = 340604416903 is a prime.

It is a super-2 number, since 2×340604420999² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340604420099) 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, 420194 + ... + 926159.

It is an arithmetic number, because the mean of its divisors is an integer number (85151505084).

Almost surely, 2^340604420999 is an apocalyptic number.

340604420999 is a deficient number, since it is larger than the sum of its proper divisors (1599337).

340604420999 is a wasteful number, since it uses less digits than its factorization.

340604420999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1599336.

The product of its (nonzero) digits is 1679616, while the sum is 50.

The spelling of 340604420999 in words is "three hundred forty billion, six hundred four million, four hundred twenty thousand, nine hundred ninety-nine".