78903445 has 8 divisors (see below), whose sum is σ = 94799520. Its totient is φ = 63045840.

The previous prime is 78903431. The next prime is 78903457. The reversal of 78903445 is 54430987.

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

It is not a de Polignac number, because 78903445 - 2⁵ = 78903413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78903398 and 78903407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4891 + ... + 13480.

It is an arithmetic number, because the mean of its divisors is an integer number (11849940).

Almost surely, 2^78903445 is an apocalyptic number.

It is an amenable number.

78903445 is a deficient number, since it is larger than the sum of its proper divisors (15896075).

78903445 is a wasteful number, since it uses less digits than its factorization.

78903445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19235.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 78903445 is about 8882.7611135277. The cubic root of 78903445 is about 428.9091604238.

The spelling of 78903445 in words is "seventy-eight million, nine hundred three thousand, four hundred forty-five".