71084394 has 24 divisors (see below), whose sum is σ = 159328260. Its totient is φ = 22877568.

The previous prime is 71084393. The next prime is 71084411. The reversal of 71084394 is 49348017.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 60606225 + 10478169 = 7785^2 + 3237^2 .

It is not an unprimeable number, because it can be changed into a prime (71084393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67567 + ... + 68610.

Almost surely, 2^71084394 is an apocalyptic number.

71084394 is an abundant number, since it is smaller than the sum of its proper divisors (88243866).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71084394 is a wasteful number, since it uses less digits than its factorization.

71084394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136214 (or 136211 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 71084394 is about 8431.1561484769. The cubic root of 71084394 is about 414.2457757887.

The spelling of 71084394 in words is "seventy-one million, eighty-four thousand, three hundred ninety-four".