78053789 has 16 divisors (see below), whose sum is σ = 90543744. Its totient is φ = 66580800.

The previous prime is 78053771. The next prime is 78053803. The reversal of 78053789 is 98735087.

It is not a de Polignac number, because 78053789 - 2¹² = 78049693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78053719) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10499 + ... + 16319.

It is an arithmetic number, because the mean of its divisors is an integer number (5658984).

Almost surely, 2^78053789 is an apocalyptic number.

It is an amenable number.

78053789 is a deficient number, since it is larger than the sum of its proper divisors (12489955).

78053789 is a wasteful number, since it uses less digits than its factorization.

78053789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5908.

The product of its (nonzero) digits is 423360, while the sum is 47.

The square root of 78053789 is about 8834.8055439834. The cubic root of 78053789 is about 427.3640601482.

The spelling of 78053789 in words is "seventy-eight million, fifty-three thousand, seven hundred eighty-nine".