71398429 has 4 divisors (see below), whose sum is σ = 71415900. Its totient is φ = 71380960.

The previous prime is 71398421. The next prime is 71398469. The reversal of 71398429 is 92489317.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92489317 = 41 ⋅2255837.

It can be written as a sum of positive squares in 2 ways, for example, as 34164025 + 37234404 = 5845^2 + 6102^2 .

It is a cyclic number.

It is not a de Polignac number, because 71398429 - 2³ = 71398421 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 (71398421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1047 + ... + 11995.

It is an arithmetic number, because the mean of its divisors is an integer number (17853975).

Almost surely, 2^71398429 is an apocalyptic number.

It is an amenable number.

71398429 is a deficient number, since it is larger than the sum of its proper divisors (17471).

71398429 is a wasteful number, since it uses less digits than its factorization.

71398429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17470.

The product of its digits is 108864, while the sum is 43.

The square root of 71398429 is about 8449.7591089924. The cubic root of 71398429 is about 414.8548948351.

The spelling of 71398429 in words is "seventy-one million, three hundred ninety-eight thousand, four hundred twenty-nine".