72984989 has 8 divisors (see below), whose sum is σ = 90994368. Its totient is φ = 56871360.

The previous prime is 72984953. The next prime is 72984991. The reversal of 72984989 is 98948927.

It is a happy number.

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

It is not a de Polignac number, because 72984989 - 2⁸ = 72984733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72984929) 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, 473852 + ... + 474005.

It is an arithmetic number, because the mean of its divisors is an integer number (11374296).

Almost surely, 2^72984989 is an apocalyptic number.

It is an amenable number.

72984989 is a deficient number, since it is larger than the sum of its proper divisors (18009379).

72984989 is a wasteful number, since it uses less digits than its factorization.

72984989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947875.

The product of its digits is 2612736, while the sum is 56.

The square root of 72984989 is about 8543.1252478235. The cubic root of 72984989 is about 417.9052710713.

The spelling of 72984989 in words is "seventy-two million, nine hundred eighty-four thousand, nine hundred eighty-nine".