134640999 has 12 divisors (see below), whose sum is σ = 195405912. Its totient is φ = 89334000.

The previous prime is 134640991. The next prime is 134641027. The reversal of 134640999 is 999046431.

It is not a de Polignac number, because 134640999 - 2³ = 134640991 is a prime.

It is a super-2 number, since 2×134640999² = 36256397223436002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134640991) 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 11 ways as a sum of consecutive naturals, for example, 33552 + ... + 37349.

It is an arithmetic number, because the mean of its divisors is an integer number (16283826).

Almost surely, 2^134640999 is an apocalyptic number.

134640999 is a deficient number, since it is larger than the sum of its proper divisors (60764913).

134640999 is a wasteful number, since it uses less digits than its factorization.

134640999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71118 (or 71115 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The square root of 134640999 is about 11603.4908109586. The cubic root of 134640999 is about 512.5376521217.

The spelling of 134640999 in words is "one hundred thirty-four million, six hundred forty thousand, nine hundred ninety-nine".