59991409 has 2 divisors, whose sum is σ = 59991410. Its totient is φ = 59991408.

The previous prime is 59991391. The next prime is 59991439. The reversal of 59991409 is 90419995.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35141184 + 24850225 = 5928^2 + 4985^2 .

It is a cyclic number.

It is not a de Polignac number, because 59991409 - 2²¹ = 57894257 is a prime.

It is not a weakly prime, because it can be changed into another prime (59991439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29995704 + 29995705.

It is an arithmetic number, because the mean of its divisors is an integer number (29995705).

Almost surely, 2^59991409 is an apocalyptic number.

It is an amenable number.

59991409 is a deficient number, since it is larger than the sum of its proper divisors (1).

59991409 is an equidigital number, since it uses as much as digits as its factorization.

59991409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 131220, while the sum is 46.

The square root of 59991409 is about 7745.4121258975. The cubic root of 59991409 is about 391.4680784318.

The spelling of 59991409 in words is "fifty-nine million, nine hundred ninety-one thousand, four hundred nine".