610402389 has 4 divisors (see below), whose sum is σ = 813869856. Its totient is φ = 406934924.

The previous prime is 610402381. The next prime is 610402423. The reversal of 610402389 is 983204016.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 610402389 - 2³ = 610402381 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (610402381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101733729 + ... + 101733734.

It is an arithmetic number, because the mean of its divisors is an integer number (203467464).

Almost surely, 2^610402389 is an apocalyptic number.

It is an amenable number.

610402389 is a deficient number, since it is larger than the sum of its proper divisors (203467467).

610402389 is a wasteful number, since it uses less digits than its factorization.

610402389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203467466.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 610402389 is about 24706.3228546864. The cubic root of 610402389 is about 848.2790504476.

The spelling of 610402389 in words is "six hundred ten million, four hundred two thousand, three hundred eighty-nine".