78469401 has 8 divisors (see below), whose sum is σ = 108001024. Its totient is φ = 50625360.

The previous prime is 78469381. The next prime is 78469403. The reversal of 78469401 is 10496487.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 78469401 - 2¹¹ = 78467353 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78469401.

It is not an unprimeable number, because it can be changed into a prime (78469403) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 421786 + ... + 421971.

It is an arithmetic number, because the mean of its divisors is an integer number (13500128).

Almost surely, 2^78469401 is an apocalyptic number.

It is an amenable number.

78469401 is a deficient number, since it is larger than the sum of its proper divisors (29531623).

78469401 is a wasteful number, since it uses less digits than its factorization.

78469401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843791.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 78469401 is about 8858.2956035572. The cubic root of 78469401 is about 428.1212444375.

The spelling of 78469401 in words is "seventy-eight million, four hundred sixty-nine thousand, four hundred one".