43649049 has 4 divisors (see below), whose sum is σ = 58198736. Its totient is φ = 29099364.

The previous prime is 43649033. The next prime is 43649059. The reversal of 43649049 is 94094634.

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 not a de Polignac number, because 43649049 - 2⁴ = 43649033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43648998 and 43649016.

It is not an unprimeable number, because it can be changed into a prime (43649029) 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, 7274839 + ... + 7274844.

It is an arithmetic number, because the mean of its divisors is an integer number (14549684).

Almost surely, 2^43649049 is an apocalyptic number.

It is an amenable number.

43649049 is a deficient number, since it is larger than the sum of its proper divisors (14549687).

43649049 is a wasteful number, since it uses less digits than its factorization.

43649049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14549686.

The product of its (nonzero) digits is 93312, while the sum is 39.

The square root of 43649049 is about 6606.7426921290. The cubic root of 43649049 is about 352.0937062204.

The spelling of 43649049 in words is "forty-three million, six hundred forty-nine thousand, forty-nine".