97220407 has 2 divisors, whose sum is σ = 97220408. Its totient is φ = 97220406.

The previous prime is 97220401. The next prime is 97220419. The reversal of 97220407 is 70402279.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (70402279) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97220407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97220401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48610203 + 48610204.

It is an arithmetic number, because the mean of its divisors is an integer number (48610204).

Almost surely, 2^97220407 is an apocalyptic number.

97220407 is a deficient number, since it is larger than the sum of its proper divisors (1).

97220407 is an equidigital number, since it uses as much as digits as its factorization.

97220407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 97220407 is about 9860.0409228360. The cubic root of 97220407 is about 459.8178342969.

The spelling of 97220407 in words is "ninety-seven million, two hundred twenty thousand, four hundred seven".