78940311 has 8 divisors (see below), whose sum is σ = 105406704. Its totient is φ = 52550400.

The previous prime is 78940297. The next prime is 78940313. The reversal of 78940311 is 11304987.

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

It is not a de Polignac number, because 78940311 - 2⁶ = 78940247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78940313) 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, 16666 + ... + 20871.

It is an arithmetic number, because the mean of its divisors is an integer number (13175838).

Almost surely, 2^78940311 is an apocalyptic number.

78940311 is a deficient number, since it is larger than the sum of its proper divisors (26466393).

78940311 is a wasteful number, since it uses less digits than its factorization.

78940311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38241.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 78940311 is about 8884.8360142436. The cubic root of 78940311 is about 428.9759496626.

The spelling of 78940311 in words is "seventy-eight million, nine hundred forty thousand, three hundred eleven".