78829401 has 8 divisors (see below), whose sum is σ = 120121024. Its totient is φ = 45045360.

The previous prime is 78829397. The next prime is 78829411. The reversal of 78829401 is 10492887.

78829401 is nontrivially palindromic in base 15.

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

It is not a de Polignac number, because 78829401 - 2² = 78829397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78829401.

It is not an unprimeable number, because it can be changed into a prime (78829411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1876870 + ... + 1876911.

It is an arithmetic number, because the mean of its divisors is an integer number (15015128).

Almost surely, 2^78829401 is an apocalyptic number.

It is an amenable number.

78829401 is a deficient number, since it is larger than the sum of its proper divisors (41291623).

78829401 is a wasteful number, since it uses less digits than its factorization.

78829401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3753791.

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 78829401 is about 8878.5922870689. The cubic root of 78829401 is about 428.7749538242.

The spelling of 78829401 in words is "seventy-eight million, eight hundred twenty-nine thousand, four hundred one".