97481779 has 2 divisors, whose sum is σ = 97481780. Its totient is φ = 97481778.

The previous prime is 97481773. The next prime is 97481801. The reversal of 97481779 is 97718479.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97481779 - 2¹¹ = 97479731 is a prime.

It is not a weakly prime, because it can be changed into another prime (97481773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48740889 + 48740890.

It is an arithmetic number, because the mean of its divisors is an integer number (48740890).

Almost surely, 2^97481779 is an apocalyptic number.

97481779 is a deficient number, since it is larger than the sum of its proper divisors (1).

97481779 is an equidigital number, since it uses as much as digits as its factorization.

97481779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 889056, while the sum is 52.

The square root of 97481779 is about 9873.2861297544. The cubic root of 97481779 is about 460.2295310071.

The spelling of 97481779 in words is "ninety-seven million, four hundred eighty-one thousand, seven hundred seventy-nine".