401210609 has 2 divisors, whose sum is σ = 401210610. Its totient is φ = 401210608.

The previous prime is 401210533. The next prime is 401210617. The reversal of 401210609 is 906012104.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 224400400 + 176810209 = 14980^2 + 13297^2 .

It is a cyclic number.

It is not a de Polignac number, because 401210609 - 2¹² = 401206513 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (401213609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200605304 + 200605305.

It is an arithmetic number, because the mean of its divisors is an integer number (200605305).

Almost surely, 2^401210609 is an apocalyptic number.

It is an amenable number.

401210609 is a deficient number, since it is larger than the sum of its proper divisors (1).

401210609 is an equidigital number, since it uses as much as digits as its factorization.

401210609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 401210609 is about 20030.2423599916. The cubic root of 401210609 is about 737.5488713760.

The spelling of 401210609 in words is "four hundred one million, two hundred ten thousand, six hundred nine".