609638390 has 16 divisors (see below), whose sum is σ = 1107062208. Its totient is φ = 241696896.

The previous prime is 609638369. The next prime is 609638431. The reversal of 609638390 is 93836906.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268622 + ... + 270881.

It is an arithmetic number, because the mean of its divisors is an integer number (69191388).

Almost surely, 2^609638390 is an apocalyptic number.

609638390 is a deficient number, since it is larger than the sum of its proper divisors (497423818).

609638390 is a wasteful number, since it uses less digits than its factorization.

609638390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539623.

The product of its (nonzero) digits is 209952, while the sum is 44.

The square root of 609638390 is about 24690.8564047503. The cubic root of 609638390 is about 847.9249916967.

The spelling of 609638390 in words is "six hundred nine million, six hundred thirty-eight thousand, three hundred ninety".