78297403 has 2 divisors, whose sum is σ = 78297404. Its totient is φ = 78297402.

The previous prime is 78297397. The next prime is 78297409. The reversal of 78297403 is 30479287.

It is a balanced prime because it is at equal distance from previous prime (78297397) and next prime (78297409).

It is a cyclic number.

It is not a de Polignac number, because 78297403 - 2⁵ = 78297371 is a prime.

It is a super-2 number, since 2×78297403² = 12260966633088818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78297409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39148701 + 39148702.

It is an arithmetic number, because the mean of its divisors is an integer number (39148702).

Almost surely, 2^78297403 is an apocalyptic number.

78297403 is a deficient number, since it is larger than the sum of its proper divisors (1).

78297403 is an equidigital number, since it uses as much as digits as its factorization.

78297403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 78297403 is about 8848.5819767915. The cubic root of 78297403 is about 427.8082142896.

The spelling of 78297403 in words is "seventy-eight million, two hundred ninety-seven thousand, four hundred three".