75489490 has 16 divisors (see below), whose sum is σ = 138445848. Its totient is φ = 29625856.

The previous prime is 75489481. The next prime is 75489541. The reversal of 75489490 is 9498457.

It can be written as a sum of positive squares in 4 ways, for example, as 72743841 + 2745649 = 8529^2 + 1657^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 75489490.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70687 + ... + 71746.

Almost surely, 2^75489490 is an apocalyptic number.

75489490 is a deficient number, since it is larger than the sum of its proper divisors (62956358).

75489490 is a wasteful number, since it uses less digits than its factorization.

75489490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142493.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 75489490 is about 8688.4687949028. The cubic root of 75489490 is about 422.6317925043.

The spelling of 75489490 in words is "seventy-five million, four hundred eighty-nine thousand, four hundred ninety".