2135949 has 4 divisors (see below), whose sum is σ = 2847936. Its totient is φ = 1423964.

The previous prime is 2135933. The next prime is 2135951. The reversal of 2135949 is 9495312.

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 2135949 - 2⁴ = 2135933 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2135909) 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, 355989 + ... + 355994.

It is an arithmetic number, because the mean of its divisors is an integer number (711984).

2^2135949 is an apocalyptic number.

It is an amenable number.

2135949 is a deficient number, since it is larger than the sum of its proper divisors (711987).

2135949 is an equidigital number, since it uses as much as digits as its factorization.

2135949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711986.

The product of its digits is 9720, while the sum is 33.

The square root of 2135949 is about 1461.4886246564. The cubic root of 2135949 is about 128.7845089261.

The spelling of 2135949 in words is "two million, one hundred thirty-five thousand, nine hundred forty-nine".