209384998 has 8 divisors (see below), whose sum is σ = 322566192. Its totient is φ = 101862936.

The previous prime is 209384969. The next prime is 209384999. The reversal of 209384998 is 899483902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209384999) 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, 1414690 + ... + 1414837.

It is an arithmetic number, because the mean of its divisors is an integer number (40320774).

Almost surely, 2^209384998 is an apocalyptic number.

209384998 is a deficient number, since it is larger than the sum of its proper divisors (113181194).

209384998 is a wasteful number, since it uses less digits than its factorization.

209384998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2829566.

The product of its (nonzero) digits is 1119744, while the sum is 52.

The square root of 209384998 is about 14470.1416026244. The cubic root of 209384998 is about 593.8113860374.

The spelling of 209384998 in words is "two hundred nine million, three hundred eighty-four thousand, nine hundred ninety-eight".