84737479 has 4 divisors (see below), whose sum is σ = 86126680. Its totient is φ = 83348280.

The previous prime is 84737467. The next prime is 84737489. The reversal of 84737479 is 97473748.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84737479 - 2⁷ = 84737351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84737459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 694509 + ... + 694630.

It is an arithmetic number, because the mean of its divisors is an integer number (21531670).

Almost surely, 2^84737479 is an apocalyptic number.

84737479 is a deficient number, since it is larger than the sum of its proper divisors (1389201).

84737479 is a wasteful number, since it uses less digits than its factorization.

84737479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1389200.

The product of its digits is 1185408, while the sum is 49.

The square root of 84737479 is about 9205.2962472698. The cubic root of 84737479 is about 439.2298493846.

It can be divided in two parts, 847 and 37479, that multiplied together give a palindrome (31744713).

The spelling of 84737479 in words is "eighty-four million, seven hundred thirty-seven thousand, four hundred seventy-nine".