45369649 has 4 divisors (see below), whose sum is σ = 48859636. Its totient is φ = 41879664.

The previous prime is 45369563. The next prime is 45369661. The reversal of 45369649 is 94696354.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2663424 + 42706225 = 1632^2 + 6535^2 .

It is a cyclic number.

It is not a de Polignac number, because 45369649 - 2¹⁵ = 45336881 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45369599 and 45369608.

It is not an unprimeable number, because it can be changed into a prime (45369349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1744974 + ... + 1744999.

It is an arithmetic number, because the mean of its divisors is an integer number (12214909).

Almost surely, 2^45369649 is an apocalyptic number.

It is an amenable number.

45369649 is a deficient number, since it is larger than the sum of its proper divisors (3489987).

45369649 is a wasteful number, since it uses less digits than its factorization.

45369649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3489986.

The product of its digits is 699840, while the sum is 46.

The square root of 45369649 is about 6735.6995924700. The cubic root of 45369649 is about 356.6606032490.

The spelling of 45369649 in words is "forty-five million, three hundred sixty-nine thousand, six hundred forty-nine".