36609749 has 4 divisors (see below), whose sum is σ = 39937920. Its totient is φ = 33281580.

The previous prime is 36609737. The next prime is 36609763. The reversal of 36609749 is 94790663.

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: 94790663 = 11 ⋅8617333.

It is a cyclic number.

It is not a de Polignac number, because 36609749 - 2⁸ = 36609493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36609709) 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, 1664069 + ... + 1664090.

It is an arithmetic number, because the mean of its divisors is an integer number (9984480).

Almost surely, 2^36609749 is an apocalyptic number.

It is an amenable number.

36609749 is a deficient number, since it is larger than the sum of its proper divisors (3328171).

36609749 is a wasteful number, since it uses less digits than its factorization.

36609749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3328170.

The product of its (nonzero) digits is 244944, while the sum is 44.

The square root of 36609749 is about 6050.5990612501. The cubic root of 36609749 is about 332.0465078554.

The spelling of 36609749 in words is "thirty-six million, six hundred nine thousand, seven hundred forty-nine".