49409091 has 12 divisors (see below), whose sum is σ = 72715968. Its totient is φ = 32317584.

The previous prime is 49409081. The next prime is 49409117. The reversal of 49409091 is 19090494.

It is not a de Polignac number, because 49409091 - 2⁶ = 49409027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (49409051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51315 + ... + 52268.

It is an arithmetic number, because the mean of its divisors is an integer number (6059664).

Almost surely, 2^49409091 is an apocalyptic number.

49409091 is a deficient number, since it is larger than the sum of its proper divisors (23306877).

49409091 is a wasteful number, since it uses less digits than its factorization.

49409091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103642 (or 103639 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 49409091 is about 7029.1600493942. The cubic root of 49409091 is about 366.9461099340.

The spelling of 49409091 in words is "forty-nine million, four hundred nine thousand, ninety-one".