97970389 has 4 divisors (see below), whose sum is σ = 106876800. Its totient is φ = 89063980.

The previous prime is 97970387. The next prime is 97970417. The reversal of 97970389 is 98307979.

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 97970389 - 2¹ = 97970387 is a prime.

It is a super-2 number, since 2×97970389² = 19196394241622642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97970387) 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, 4453189 + ... + 4453210.

It is an arithmetic number, because the mean of its divisors is an integer number (26719200).

Almost surely, 2^97970389 is an apocalyptic number.

It is an amenable number.

97970389 is a deficient number, since it is larger than the sum of its proper divisors (8906411).

97970389 is a wasteful number, since it uses less digits than its factorization.

97970389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8906410.

The product of its (nonzero) digits is 857304, while the sum is 52.

The square root of 97970389 is about 9897.9992422711. Note that the first 3 decimals coincide. The cubic root of 97970389 is about 460.9971892802.

The spelling of 97970389 in words is "ninety-seven million, nine hundred seventy thousand, three hundred eighty-nine".