49143961 has 4 divisors (see below), whose sum is σ = 49230900. Its totient is φ = 49057024.

The previous prime is 49143947. The next prime is 49143967. The reversal of 49143961 is 16934194.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11689561 + 37454400 = 3419^2 + 6120^2 .

It is a cyclic number.

It is not a de Polignac number, because 49143961 - 2⁵ = 49143929 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 49143961.

It is not an unprimeable number, because it can be changed into a prime (49143967) 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, 42616 + ... + 43753.

It is an arithmetic number, because the mean of its divisors is an integer number (12307725).

Almost surely, 2^49143961 is an apocalyptic number.

It is an amenable number.

49143961 is a deficient number, since it is larger than the sum of its proper divisors (86939).

49143961 is an equidigital number, since it uses as much as digits as its factorization.

49143961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86938.

The product of its digits is 23328, while the sum is 37.

The square root of 49143961 is about 7010.2753868875. The cubic root of 49143961 is about 366.2885861337.

The spelling of 49143961 in words is "forty-nine million, one hundred forty-three thousand, nine hundred sixty-one".