134997990 has 16 divisors (see below), whose sum is σ = 323995248. Its totient is φ = 35999456.

The previous prime is 134997977. The next prime is 134997991. The reversal of 134997990 is 99799431.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134997991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2249937 + ... + 2249996.

It is an arithmetic number, because the mean of its divisors is an integer number (20249703).

Almost surely, 2^134997990 is an apocalyptic number.

134997990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

134997990 is an abundant number, since it is smaller than the sum of its proper divisors (188997258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

134997990 is a wasteful number, since it uses less digits than its factorization.

134997990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4499943.

The product of its (nonzero) digits is 551124, while the sum is 51.

The square root of 134997990 is about 11618.8635416722. The cubic root of 134997990 is about 512.9902380262.

The spelling of 134997990 in words is "one hundred thirty-four million, nine hundred ninety-seven thousand, nine hundred ninety".