49171863 has 16 divisors (see below), whose sum is σ = 71940960. Its totient is φ = 29687424.

The previous prime is 49171819. The next prime is 49171873. The reversal of 49171863 is 36817194.

It is not a de Polignac number, because 49171863 - 2⁶ = 49171799 is a prime.

It is a super-2 number, since 2×49171863² = 4835744221781538, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49171813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9828 + ... + 13961.

It is an arithmetic number, because the mean of its divisors is an integer number (4496310).

Almost surely, 2^49171863 is an apocalyptic number.

49171863 is a deficient number, since it is larger than the sum of its proper divisors (22769097).

49171863 is a wasteful number, since it uses less digits than its factorization.

49171863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23858.

The product of its digits is 36288, while the sum is 39.

The square root of 49171863 is about 7012.2651832343. The cubic root of 49171863 is about 366.3578944158.

The spelling of 49171863 in words is "forty-nine million, one hundred seventy-one thousand, eight hundred sixty-three".