71904469 has 32 divisors (see below), whose sum is σ = 92897280. Its totient is φ = 54129600.

The previous prime is 71904461. The next prime is 71904487. The reversal of 71904469 is 96440917.

It is a happy number.

It is not a de Polignac number, because 71904469 - 2³ = 71904461 is a prime.

It is a super-2 number, since 2×71904469² = 10340505324343922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71904461) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 200112 + ... + 200470.

It is an arithmetic number, because the mean of its divisors is an integer number (2903040).

Almost surely, 2^71904469 is an apocalyptic number.

It is an amenable number.

71904469 is a deficient number, since it is larger than the sum of its proper divisors (20992811).

71904469 is a wasteful number, since it uses less digits than its factorization.

71904469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 71904469 is about 8479.6502876003. The cubic root of 71904469 is about 415.8326901310.

The spelling of 71904469 in words is "seventy-one million, nine hundred four thousand, four hundred sixty-nine".