340404737 has 4 divisors (see below), whose sum is σ = 340682496. Its totient is φ = 340126980.

The previous prime is 340404683. The next prime is 340404749. The reversal of 340404737 is 737404043.

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.

It is a cyclic number.

It is not a de Polignac number, because 340404737 - 2²⁰ = 339356161 is a prime.

It is a super-3 number, since 3×340404737³ (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 (340404937) 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, 137033 + ... + 139494.

It is an arithmetic number, because the mean of its divisors is an integer number (85170624).

Almost surely, 2^340404737 is an apocalyptic number.

It is an amenable number.

340404737 is a deficient number, since it is larger than the sum of its proper divisors (277759).

340404737 is a wasteful number, since it uses less digits than its factorization.

340404737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277758.

The product of its (nonzero) digits is 28224, while the sum is 32.

The square root of 340404737 is about 18450.0606232066. The cubic root of 340404737 is about 698.2300433860.

The spelling of 340404737 in words is "three hundred forty million, four hundred four thousand, seven hundred thirty-seven".