340635749 has 8 divisors (see below), whose sum is σ = 369470808. Its totient is φ = 312778240.

The previous prime is 340635689. The next prime is 340635797. The reversal of 340635749 is 947536043.

It can be written as a sum of positive squares in 4 ways, for example, as 77968900 + 262666849 = 8830^2 + 16207^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-340635749 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340635149) 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 7 ways as a sum of consecutive naturals, for example, 243662 + ... + 245055.

It is an arithmetic number, because the mean of its divisors is an integer number (46183851).

Almost surely, 2^340635749 is an apocalyptic number.

It is an amenable number.

340635749 is a deficient number, since it is larger than the sum of its proper divisors (28835059).

340635749 is a wasteful number, since it uses less digits than its factorization.

340635749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488775.

The product of its (nonzero) digits is 272160, while the sum is 41.

The square root of 340635749 is about 18456.3200286514. The cubic root of 340635749 is about 698.3879564298.

The spelling of 340635749 in words is "three hundred forty million, six hundred thirty-five thousand, seven hundred forty-nine".