134769389 has 4 divisors (see below), whose sum is σ = 136029024. Its totient is φ = 133509756.

The previous prime is 134769379. The next prime is 134769433. The reversal of 134769389 is 983967431.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 983967431 = 5147 ⋅191173.

It is a cyclic number.

It is not a de Polignac number, because 134769389 - 2¹⁶ = 134703853 is a prime.

It is a super-2 number, since 2×134769389² = 36325576422866642, which contains 22 as substring.

It is a Duffinian 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 (134769329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 629657 + ... + 629870.

It is an arithmetic number, because the mean of its divisors is an integer number (34007256).

Almost surely, 2^134769389 is an apocalyptic number.

It is an amenable number.

134769389 is a deficient number, since it is larger than the sum of its proper divisors (1259635).

134769389 is a wasteful number, since it uses less digits than its factorization.

134769389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1259634.

The product of its digits is 979776, while the sum is 50.

The square root of 134769389 is about 11609.0218795556. The cubic root of 134769389 is about 512.7005143608.

The spelling of 134769389 in words is "one hundred thirty-four million, seven hundred sixty-nine thousand, three hundred eighty-nine".