49471691 has 4 divisors (see below), whose sum is σ = 51067584. Its totient is φ = 47875800.

The previous prime is 49471679. The next prime is 49471769. The reversal of 49471691 is 19617494.

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

It is a cyclic number.

It is not a de Polignac number, because 49471691 - 2¹⁰ = 49470667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49471601) 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, 797900 + ... + 797961.

It is an arithmetic number, because the mean of its divisors is an integer number (12766896).

Almost surely, 2^49471691 is an apocalyptic number.

49471691 is a deficient number, since it is larger than the sum of its proper divisors (1595893).

49471691 is a wasteful number, since it uses less digits than its factorization.

49471691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1595892.

The product of its digits is 54432, while the sum is 41.

The square root of 49471691 is about 7033.6115189851. The cubic root of 49471691 is about 367.1010148425.

The spelling of 49471691 in words is "forty-nine million, four hundred seventy-one thousand, six hundred ninety-one".