3613949 has 4 divisors (see below), whose sum is σ = 3730560. Its totient is φ = 3497340.

The previous prime is 3613931. The next prime is 3613957. The reversal of 3613949 is 9493163.

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: 9493163 = 67 ⋅141689.

It is a cyclic number.

It is not a de Polignac number, because 3613949 - 2⁸ = 3613693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3613999) 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, 58259 + ... + 58320.

It is an arithmetic number, because the mean of its divisors is an integer number (932640).

Almost surely, 2^3613949 is an apocalyptic number.

It is an amenable number.

3613949 is a deficient number, since it is larger than the sum of its proper divisors (116611).

3613949 is a wasteful number, since it uses less digits than its factorization.

3613949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116610.

The product of its digits is 17496, while the sum is 35.

The square root of 3613949 is about 1901.0389264820. The cubic root of 3613949 is about 153.4595804409.

The spelling of 3613949 in words is "three million, six hundred thirteen thousand, nine hundred forty-nine".