78903783 has 24 divisors (see below), whose sum is σ = 137917728. Its totient is φ = 42435072.

The previous prime is 78903761. The next prime is 78903821. The reversal of 78903783 is 38730987.

It is not a de Polignac number, because 78903783 - 2¹² = 78899687 is a prime.

It is a super-2 number, since 2×78903783² = 12451613943422178, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78902783) 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, 35766 + ... + 37907.

It is an arithmetic number, because the mean of its divisors is an integer number (5746572).

Almost surely, 2^78903783 is an apocalyptic number.

78903783 is a deficient number, since it is larger than the sum of its proper divisors (59013945).

78903783 is a wasteful number, since it uses less digits than its factorization.

78903783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73703 (or 73700 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 78903783 is about 8882.7801391231. The cubic root of 78903783 is about 428.9097728647.

The spelling of 78903783 in words is "seventy-eight million, nine hundred three thousand, seven hundred eighty-three".