71473489 has 8 divisors (see below), whose sum is σ = 74666880. Its totient is φ = 68287296.

The previous prime is 71473483. The next prime is 71473513. The reversal of 71473489 is 98437417.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71473489 - 2³ = 71473481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71473481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33204 + ... + 35290.

It is an arithmetic number, because the mean of its divisors is an integer number (9333360).

Almost surely, 2^71473489 is an apocalyptic number.

It is an amenable number.

71473489 is a deficient number, since it is larger than the sum of its proper divisors (3193391).

71473489 is a wasteful number, since it uses less digits than its factorization.

71473489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3599.

The product of its digits is 169344, while the sum is 43.

The square root of 71473489 is about 8454.1994890114. The cubic root of 71473489 is about 415.0002206415. Note that the first 3 decimals are identical.

The spelling of 71473489 in words is "seventy-one million, four hundred seventy-three thousand, four hundred eighty-nine".