170942479 has 4 divisors (see below), whose sum is σ = 175562584. Its totient is φ = 166322376.

The previous prime is 170942477. The next prime is 170942483. The reversal of 170942479 is 974249071.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 974249071 = 24821 ⋅39251.

It is a cyclic number.

It is not a de Polignac number, because 170942479 - 2¹ = 170942477 is a prime.

It is a super-2 number, since 2×170942479² = 58442662253330882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (170942477) 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, 2309997 + ... + 2310070.

It is an arithmetic number, because the mean of its divisors is an integer number (43890646).

Almost surely, 2^170942479 is an apocalyptic number.

170942479 is a deficient number, since it is larger than the sum of its proper divisors (4620105).

170942479 is an equidigital number, since it uses as much as digits as its factorization.

170942479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4620104.

The product of its (nonzero) digits is 127008, while the sum is 43.

The square root of 170942479 is about 13074.4972752301. The cubic root of 170942479 is about 554.9876673936.

The spelling of 170942479 in words is "one hundred seventy million, nine hundred forty-two thousand, four hundred seventy-nine".