49899181 has 8 divisors (see below), whose sum is σ = 51590144. Its totient is φ = 48213360.

The previous prime is 49899139. The next prime is 49899203. The reversal of 49899181 is 18199894.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49899181 is a prime.

It is a super-2 number, since 2×49899181² = 4979856528941522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49809181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36940 + ... + 38266.

It is an arithmetic number, because the mean of its divisors is an integer number (6448768).

Almost surely, 2^49899181 is an apocalyptic number.

It is an amenable number.

49899181 is a deficient number, since it is larger than the sum of its proper divisors (1690963).

49899181 is a wasteful number, since it uses less digits than its factorization.

49899181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2571.

The product of its digits is 186624, while the sum is 49.

The square root of 49899181 is about 7063.9352346974. The cubic root of 49899181 is about 368.1553696686.

The spelling of 49899181 in words is "forty-nine million, eight hundred ninety-nine thousand, one hundred eighty-one".