340404851 has 4 divisors (see below), whose sum is σ = 340643832. Its totient is φ = 340165872.

The previous prime is 340404833. The next prime is 340404863. The reversal of 340404851 is 158404043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 158404043 = 7 ⋅22629149.

It is a cyclic number.

It is not a de Polignac number, because 340404851 - 2¹⁸ = 340142707 is a prime.

It is a super-3 number, since 3×340404851³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340404811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117341 + ... + 120206.

It is an arithmetic number, because the mean of its divisors is an integer number (85160958).

Almost surely, 2^340404851 is an apocalyptic number.

340404851 is a deficient number, since it is larger than the sum of its proper divisors (238981).

340404851 is a wasteful number, since it uses less digits than its factorization.

340404851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238980.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 340404851 is about 18450.0637126271. The cubic root of 340404851 is about 698.2301213306.

Adding to 340404851 its reverse (158404043), we get a palindrome (498808894).

The spelling of 340404851 in words is "three hundred forty million, four hundred four thousand, eight hundred fifty-one".