989764501 has 4 divisors (see below), whose sum is σ = 1079743104. Its totient is φ = 899785900.

The previous prime is 989764499. The next prime is 989764553. The reversal of 989764501 is 105467989.

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 989764501 - 2¹ = 989764499 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989764561) 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, 44989285 + ... + 44989306.

It is an arithmetic number, because the mean of its divisors is an integer number (269935776).

Almost surely, 2^989764501 is an apocalyptic number.

It is an amenable number.

989764501 is a deficient number, since it is larger than the sum of its proper divisors (89978603).

989764501 is a wasteful number, since it uses less digits than its factorization.

989764501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89978602.

The product of its (nonzero) digits is 544320, while the sum is 49.

The square root of 989764501 is about 31460.5228977524. The cubic root of 989764501 is about 996.5764597475.

The spelling of 989764501 in words is "nine hundred eighty-nine million, seven hundred sixty-four thousand, five hundred one".