711989401 has 2 divisors, whose sum is σ = 711989402. Its totient is φ = 711989400.

The previous prime is 711989387. The next prime is 711989407. The reversal of 711989401 is 104989117.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 414081801 + 297907600 = 20349^2 + 17260^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-711989401 is a prime.

It is not a weakly prime, because it can be changed into another prime (711989407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 355994700 + 355994701.

It is an arithmetic number, because the mean of its divisors is an integer number (355994701).

Almost surely, 2^711989401 is an apocalyptic number.

It is an amenable number.

711989401 is a deficient number, since it is larger than the sum of its proper divisors (1).

711989401 is an equidigital number, since it uses as much as digits as its factorization.

711989401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 40.

The square root of 711989401 is about 26683.1295203542. The cubic root of 711989401 is about 892.9445882117.

The spelling of 711989401 in words is "seven hundred eleven million, nine hundred eighty-nine thousand, four hundred one".