78017049 has 36 divisors (see below), whose sum is σ = 127918336. Its totient is φ = 45738000.

The previous prime is 78016999. The next prime is 78017089. The reversal of 78017049 is 94071087.

It is not a de Polignac number, because 78017049 - 2⁹ = 78016537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78017089) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 32604 + ... + 34914.

Almost surely, 2^78017049 is an apocalyptic number.

It is an amenable number.

78017049 is a deficient number, since it is larger than the sum of its proper divisors (49901287).

78017049 is a wasteful number, since it uses less digits than its factorization.

78017049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2370 (or 2356 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 78017049 is about 8832.7260231482. The cubic root of 78017049 is about 427.2969960549.

The spelling of 78017049 in words is "seventy-eight million, seventeen thousand, forty-nine".