134440645 has 32 divisors (see below), whose sum is σ = 172846080. Its totient is φ = 100224000.

The previous prime is 134440609. The next prime is 134440667. The reversal of 134440645 is 546044431.

It is not a de Polignac number, because 134440645 - 2¹⁵ = 134407877 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 557725 + ... + 557965.

It is an arithmetic number, because the mean of its divisors is an integer number (5401440).

Almost surely, 2^134440645 is an apocalyptic number.

It is an amenable number.

134440645 is a deficient number, since it is larger than the sum of its proper divisors (38405435).

134440645 is a wasteful number, since it uses less digits than its factorization.

134440645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397.

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 134440645 is about 11594.8542466044. The cubic root of 134440645 is about 512.2832968424.

The spelling of 134440645 in words is "one hundred thirty-four million, four hundred forty thousand, six hundred forty-five".