78903469 has 2 divisors, whose sum is σ = 78903470. Its totient is φ = 78903468.

The previous prime is 78903457. The next prime is 78903481. The reversal of 78903469 is 96430987.

It is a balanced prime because it is at equal distance from previous prime (78903457) and next prime (78903481).

It can be written as a sum of positive squares in only one way, i.e., 49070025 + 29833444 = 7005^2 + 5462^2 .

It is a cyclic number.

It is not a de Polignac number, because 78903469 - 2¹¹ = 78901421 is a prime.

It is a super-2 number, since 2×78903469² = 12451514840467922, 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 (78903169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39451734 + 39451735.

It is an arithmetic number, because the mean of its divisors is an integer number (39451735).

Almost surely, 2^78903469 is an apocalyptic number.

It is an amenable number.

78903469 is a deficient number, since it is larger than the sum of its proper divisors (1).

78903469 is an equidigital number, since it uses as much as digits as its factorization.

78903469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 78903469 is about 8882.7624644589. The cubic root of 78903469 is about 428.9092039107.

The spelling of 78903469 in words is "seventy-eight million, nine hundred three thousand, four hundred sixty-nine".