49081009 has 4 divisors (see below), whose sum is σ = 51664240. Its totient is φ = 46497780.

The previous prime is 49081003. The next prime is 49081031. The reversal of 49081009 is 90018094.

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 49081009 - 2³ = 49081001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49081001) 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, 1291587 + ... + 1291624.

It is an arithmetic number, because the mean of its divisors is an integer number (12916060).

Almost surely, 2^49081009 is an apocalyptic number.

It is an amenable number.

49081009 is a deficient number, since it is larger than the sum of its proper divisors (2583231).

49081009 is a wasteful number, since it uses less digits than its factorization.

49081009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2583230.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 49081009 is about 7005.7839675514. The cubic root of 49081009 is about 366.1321175910.

The spelling of 49081009 in words is "forty-nine million, eighty-one thousand, nine".