78603949 has 16 divisors (see below), whose sum is σ = 85432320. Its totient is φ = 72096640.

The previous prime is 78603923. The next prime is 78603961. The reversal of 78603949 is 94930687.

It is a cyclic number.

It is not a de Polignac number, because 78603949 - 2²¹ = 76506797 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78603899 and 78603908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78603919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127089 + ... + 127705.

It is an arithmetic number, because the mean of its divisors is an integer number (5339520).

Almost surely, 2^78603949 is an apocalyptic number.

It is an amenable number.

78603949 is a deficient number, since it is larger than the sum of its proper divisors (6828371).

78603949 is a wasteful number, since it uses less digits than its factorization.

78603949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 78603949 is about 8865.8868140756. The cubic root of 78603949 is about 428.3657982159.

The spelling of 78603949 in words is "seventy-eight million, six hundred three thousand, nine hundred forty-nine".