85401479 has 4 divisors (see below), whose sum is σ = 85419984. Its totient is φ = 85382976.

The previous prime is 85401473. The next prime is 85401487. The reversal of 85401479 is 97410458.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 97410458 = 2 ⋅48705229.

It is a cyclic number.

It is not a de Polignac number, because 85401479 - 2²⁰ = 84352903 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 (85401473) 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, 3959 + ... + 13655.

It is an arithmetic number, because the mean of its divisors is an integer number (21354996).

Almost surely, 2^85401479 is an apocalyptic number.

85401479 is a deficient number, since it is larger than the sum of its proper divisors (18505).

85401479 is an equidigital number, since it uses as much as digits as its factorization.

85401479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18504.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 85401479 is about 9241.2920633427. The cubic root of 85401479 is about 440.3741291044.

The spelling of 85401479 in words is "eighty-five million, four hundred one thousand, four hundred seventy-nine".