340400737 has 4 divisors (see below), whose sum is σ = 348703236. Its totient is φ = 332098240.

The previous prime is 340400729. The next prime is 340400747. The reversal of 340400737 is 737004043.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 59536656 + 280864081 = 7716^2 + 16759^2 .

It is a cyclic number.

It is not a de Polignac number, because 340400737 - 2³ = 340400729 is a prime.

It is a super-3 number, since 3×340400737³ (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 (340400747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4151188 + ... + 4151269.

It is an arithmetic number, because the mean of its divisors is an integer number (87175809).

Almost surely, 2^340400737 is an apocalyptic number.

It is an amenable number.

340400737 is a deficient number, since it is larger than the sum of its proper divisors (8302499).

340400737 is an equidigital number, since it uses as much as digits as its factorization.

340400737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8302498.

The product of its (nonzero) digits is 7056, while the sum is 28.

The square root of 340400737 is about 18449.9522221604. The cubic root of 340400737 is about 698.2273084738.

The spelling of 340400737 in words is "three hundred forty million, four hundred thousand, seven hundred thirty-seven".