78475927 has 24 divisors (see below), whose sum is σ = 88194960. Its totient is φ = 69719040.

The previous prime is 78475921. The next prime is 78475933. The reversal of 78475927 is 72957487.

It is an interprime number because it is at equal distance from previous prime (78475921) and next prime (78475933).

It is not a de Polignac number, because 78475927 - 2⁷ = 78475799 is a prime.

It is a super-2 number, since 2×78475927² = 12316942237018658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78475921) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 438324 + ... + 438502.

It is an arithmetic number, because the mean of its divisors is an integer number (3674790).

Almost surely, 2^78475927 is an apocalyptic number.

78475927 is a deficient number, since it is larger than the sum of its proper divisors (9719033).

78475927 is a wasteful number, since it uses less digits than its factorization.

78475927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291 (or 274 counting only the distinct ones).

The product of its digits is 987840, while the sum is 49.

The square root of 78475927 is about 8858.6639511836. The cubic root of 78475927 is about 428.1331125108.

The spelling of 78475927 in words is "seventy-eight million, four hundred seventy-five thousand, nine hundred twenty-seven".