71849401 has 16 divisors (see below), whose sum is σ = 81559296. Its totient is φ = 62796096.

The previous prime is 71849389. The next prime is 71849419. The reversal of 71849401 is 10494817.

It is a cyclic number.

It is not a de Polignac number, because 71849401 - 2⁵ = 71849369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71849201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29631 + ... + 31963.

It is an arithmetic number, because the mean of its divisors is an integer number (5097456).

Almost surely, 2^71849401 is an apocalyptic number.

It is an amenable number.

71849401 is a deficient number, since it is larger than the sum of its proper divisors (9709895).

71849401 is a wasteful number, since it uses less digits than its factorization.

71849401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2472.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 71849401 is about 8476.4025978006. The cubic root of 71849401 is about 415.7265079371.

The spelling of 71849401 in words is "seventy-one million, eight hundred forty-nine thousand, four hundred one".