134648749 has 4 divisors (see below), whose sum is σ = 137513664. Its totient is φ = 131783836.

The previous prime is 134648747. The next prime is 134648753. The reversal of 134648749 is 947846431.

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.

It is a cyclic number.

It is not a de Polignac number, because 134648749 - 2¹ = 134648747 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 134648699 and 134648708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134648741) 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, 1432387 + ... + 1432480.

It is an arithmetic number, because the mean of its divisors is an integer number (34378416).

Almost surely, 2^134648749 is an apocalyptic number.

It is an amenable number.

134648749 is a deficient number, since it is larger than the sum of its proper divisors (2864915).

134648749 is an equidigital number, since it uses as much as digits as its factorization.

134648749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2864914.

The product of its digits is 580608, while the sum is 46.

The square root of 134648749 is about 11603.8247573806. The cubic root of 134648749 is about 512.5474859034.

The spelling of 134648749 in words is "one hundred thirty-four million, six hundred forty-eight thousand, seven hundred forty-nine".