5487589978 has 32 divisors (see below), whose sum is σ = 9097138512. Its totient is φ = 2466508800.

The previous prime is 5487589969. The next prime is 5487589981. The reversal of 5487589978 is 8799857845.

It can be written as a sum of positive squares in 8 ways, for example, as 1462068169 + 4025521809 = 38237^2 + 63447^2 .

It is a super-2 number, since 2×5487589978² = 60227287533292080968, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 627798 + ... + 636478.

Almost surely, 2^5487589978 is an apocalyptic number.

5487589978 is a deficient number, since it is larger than the sum of its proper divisors (3609548534).

5487589978 is a wasteful number, since it uses less digits than its factorization.

5487589978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9330.

The product of its digits is 203212800, while the sum is 70.

The square root of 5487589978 is about 74078.2692697393. The cubic root of 5487589978 is about 1763.8455405829.

The spelling of 5487589978 in words is "five billion, four hundred eighty-seven million, five hundred eighty-nine thousand, nine hundred seventy-eight".