78469398 has 40 divisors (see below), whose sum is σ = 200950992. Its totient is φ = 22419504.

The previous prime is 78469381. The next prime is 78469403. The reversal of 78469398 is 89396487.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 33465 + ... + 35732.

Almost surely, 2^78469398 is an apocalyptic number.

78469398 is an abundant number, since it is smaller than the sum of its proper divisors (122481594).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78469398 is a wasteful number, since it uses less digits than its factorization.

78469398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69218 (or 69209 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The square root of 78469398 is about 8858.2954342244. The cubic root of 78469398 is about 428.1212389816.

The spelling of 78469398 in words is "seventy-eight million, four hundred sixty-nine thousand, three hundred ninety-eight".