99478469 has 2 divisors, whose sum is σ = 99478470. Its totient is φ = 99478468.

The previous prime is 99478453. The next prime is 99478493. The reversal of 99478469 is 96487499.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64609444 + 34869025 = 8038^2 + 5905^2 .

It is an emirp because it is prime and its reverse (96487499) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99478469 - 2⁴ = 99478453 is a prime.

It is a super-2 number, since 2×99478469² = 19791931589167922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99478429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49739234 + 49739235.

It is an arithmetic number, because the mean of its divisors is an integer number (49739235).

Almost surely, 2^99478469 is an apocalyptic number.

It is an amenable number.

99478469 is a deficient number, since it is larger than the sum of its proper divisors (1).

99478469 is an equidigital number, since it uses as much as digits as its factorization.

99478469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3919104, while the sum is 56.

The square root of 99478469 is about 9973.8893617285. The cubic root of 99478469 is about 463.3505656974.

The spelling of 99478469 in words is "ninety-nine million, four hundred seventy-eight thousand, four hundred sixty-nine".