71401879 has 2 divisors, whose sum is σ = 71401880. Its totient is φ = 71401878.

The previous prime is 71401877. The next prime is 71401901. The reversal of 71401879 is 97810417.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71401879 - 2¹ = 71401877 is a prime.

Together with 71401877, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71401877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35700939 + 35700940.

It is an arithmetic number, because the mean of its divisors is an integer number (35700940).

Almost surely, 2^71401879 is an apocalyptic number.

71401879 is a deficient number, since it is larger than the sum of its proper divisors (1).

71401879 is an equidigital number, since it uses as much as digits as its factorization.

71401879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 37.

The square root of 71401879 is about 8449.9632543580. The cubic root of 71401879 is about 414.8615767111.

The spelling of 71401879 in words is "seventy-one million, four hundred one thousand, eight hundred seventy-nine".