78903471 has 4 divisors (see below), whose sum is σ = 105204632. Its totient is φ = 52602312.

The previous prime is 78903469. The next prime is 78903481. The reversal of 78903471 is 17430987.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 78903471 - 2¹ = 78903469 is a prime.

It is a super-3 number, since 3×78903471³ (a number of 25 digits) contains 333 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 (78903431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13150576 + ... + 13150581.

It is an arithmetic number, because the mean of its divisors is an integer number (26301158).

Almost surely, 2^78903471 is an apocalyptic number.

78903471 is a deficient number, since it is larger than the sum of its proper divisors (26301161).

78903471 is a wasteful number, since it uses less digits than its factorization.

78903471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26301160.

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 78903471 is about 8882.7625770365. The cubic root of 78903471 is about 428.9092075347.

The spelling of 78903471 in words is "seventy-eight million, nine hundred three thousand, four hundred seventy-one".