97908407 has 2 divisors, whose sum is σ = 97908408. Its totient is φ = 97908406.

The previous prime is 97908367. The next prime is 97908439. The reversal of 97908407 is 70480979.

It is a strong prime.

It is an emirp because it is prime and its reverse (70480979) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97908407 - 2¹² = 97904311 is a prime.

It is a super-2 number, since 2×97908407² = 19172112322555298, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97901407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48954203 + 48954204.

It is an arithmetic number, because the mean of its divisors is an integer number (48954204).

Almost surely, 2^97908407 is an apocalyptic number.

97908407 is a deficient number, since it is larger than the sum of its proper divisors (1).

97908407 is an equidigital number, since it uses as much as digits as its factorization.

97908407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 97908407 is about 9894.8677100808. The cubic root of 97908407 is about 460.8999505262.

The spelling of 97908407 in words is "ninety-seven million, nine hundred eight thousand, four hundred seven".