63490489 has 4 divisors (see below), whose sum is σ = 64967056. Its totient is φ = 62013924.

The previous prime is 63490487. The next prime is 63490499. The reversal of 63490489 is 98409436.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63490489 - 2¹ = 63490487 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43), and also a Moran number because the ratio is a prime number: 1476523 = 63490489 / (6 + 3 + 4 + 9 + 0 + 4 + 8 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63490487) 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, 738219 + ... + 738304.

It is an arithmetic number, because the mean of its divisors is an integer number (16241764).

Almost surely, 2^63490489 is an apocalyptic number.

It is an amenable number.

63490489 is a deficient number, since it is larger than the sum of its proper divisors (1476567).

63490489 is a wasteful number, since it uses less digits than its factorization.

63490489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1476566.

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 63490489 is about 7968.0919296906. The cubic root of 63490489 is about 398.9356893689.

The spelling of 63490489 in words is "sixty-three million, four hundred ninety thousand, four hundred eighty-nine".