87494149 has 8 divisors (see below), whose sum is σ = 89291160. Its totient is φ = 85702656.

The previous prime is 87494137. The next prime is 87494153. The reversal of 87494149 is 94149478.

It can be written as a sum of positive squares in 4 ways, for example, as 3038049 + 84456100 = 1743^2 + 9190^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 87494149 - 2²³ = 79105541 is a prime.

It is a super-2 number, since 2×87494149² = 15310452218468402, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87494099 and 87494108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87494129) 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, 48349 + ... + 50125.

It is an arithmetic number, because the mean of its divisors is an integer number (11161395).

Almost surely, 2^87494149 is an apocalyptic number.

It is an amenable number.

87494149 is a deficient number, since it is larger than the sum of its proper divisors (1797011).

87494149 is a wasteful number, since it uses less digits than its factorization.

87494149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2759.

The product of its digits is 290304, while the sum is 46.

The square root of 87494149 is about 9353.8307126011. The cubic root of 87494149 is about 443.9421051720.

The spelling of 87494149 in words is "eighty-seven million, four hundred ninety-four thousand, one hundred forty-nine".