97421009 has 8 divisors (see below), whose sum is σ = 111408960. Its totient is φ = 83450736.

The previous prime is 97420987. The next prime is 97421041. The reversal of 97421009 is 90012479.

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

It is a cyclic number.

It is not a de Polignac number, because 97421009 - 2²⁰ = 96372433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97421059) 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, 10982 + ... + 17760.

It is an arithmetic number, because the mean of its divisors is an integer number (13926120).

Almost surely, 2^97421009 is an apocalyptic number.

It is an amenable number.

97421009 is a deficient number, since it is larger than the sum of its proper divisors (13987951).

97421009 is a wasteful number, since it uses less digits than its factorization.

97421009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8839.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 97421009 is about 9870.2081538334. The cubic root of 97421009 is about 460.1338756526.

The spelling of 97421009 in words is "ninety-seven million, four hundred twenty-one thousand, nine".