87144941 has 16 divisors (see below), whose sum is σ = 99828288. Its totient is φ = 75360000.

The previous prime is 87144931. The next prime is 87144943. The reversal of 87144941 is 14944178.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87144941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87144895 and 87144904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87144943) 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, 54686 + ... + 56256.

It is an arithmetic number, because the mean of its divisors is an integer number (6239268).

Almost surely, 2^87144941 is an apocalyptic number.

It is an amenable number.

87144941 is a deficient number, since it is larger than the sum of its proper divisors (12683347).

87144941 is a wasteful number, since it uses less digits than its factorization.

87144941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1852.

The product of its digits is 32256, while the sum is 38.

The square root of 87144941 is about 9335.1454728890. The cubic root of 87144941 is about 443.3506947931.

The spelling of 87144941 in words is "eighty-seven million, one hundred forty-four thousand, nine hundred forty-one".