134387997 has 16 divisors (see below), whose sum is σ = 182392320. Its totient is φ = 87995952.

The previous prime is 134387989. The next prime is 134387999. The reversal of 134387997 is 799783431.

It is not a de Polignac number, because 134387997 - 2³ = 134387989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134387999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87478 + ... + 89000.

It is an arithmetic number, because the mean of its divisors is an integer number (11399520).

Almost surely, 2^134387997 is an apocalyptic number.

It is an amenable number.

134387997 is a deficient number, since it is larger than the sum of its proper divisors (48004323).

134387997 is a wasteful number, since it uses less digits than its factorization.

134387997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2032.

The product of its digits is 1143072, while the sum is 51.

The square root of 134387997 is about 11592.5837068360. The cubic root of 134387997 is about 512.2164167397.

The spelling of 134387997 in words is "one hundred thirty-four million, three hundred eighty-seven thousand, nine hundred ninety-seven".