340400045 has 4 divisors (see below), whose sum is σ = 408480060. Its totient is φ = 272320032.

The previous prime is 340400017. The next prime is 340400051. The reversal of 340400045 is 540004043.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 540004043 = 823 ⋅656141.

It can be written as a sum of positive squares in 2 ways, for example, as 132204004 + 208196041 = 11498^2 + 14429^2 .

It is a cyclic number.

It is not a de Polignac number, because 340400045 - 2⁶ = 340399981 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34040000 + ... + 34040009.

It is an arithmetic number, because the mean of its divisors is an integer number (102120015).

Almost surely, 2^340400045 is an apocalyptic number.

It is an amenable number.

340400045 is a deficient number, since it is larger than the sum of its proper divisors (68080015).

340400045 is an equidigital number, since it uses as much as digits as its factorization.

340400045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68080014.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 340400045 is about 18449.9334687147. The cubic root of 340400045 is about 698.2268353319.

Adding to 340400045 its reverse (540004043), we get a palindrome (880404088).

The spelling of 340400045 in words is "three hundred forty million, four hundred thousand, forty-five".