78100479 has 12 divisors (see below), whose sum is σ = 117716976. Its totient is φ = 49803072.

The previous prime is 78100441. The next prime is 78100487. The reversal of 78100479 is 97400187.

It is not a de Polignac number, because 78100479 - 2¹¹ = 78098431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78100489) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 188442 + ... + 188855.

It is an arithmetic number, because the mean of its divisors is an integer number (9809748).

Almost surely, 2^78100479 is an apocalyptic number.

78100479 is a deficient number, since it is larger than the sum of its proper divisors (39616497).

78100479 is a wasteful number, since it uses less digits than its factorization.

78100479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377326 (or 377323 counting only the distinct ones).

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

The square root of 78100479 is about 8837.4475387410. The cubic root of 78100479 is about 427.4492563142.

The spelling of 78100479 in words is "seventy-eight million, one hundred thousand, four hundred seventy-nine".