1203099989 has 24 divisors (see below), whose sum is σ = 1510709760. Its totient is φ = 949675104.

The previous prime is 1203099971. The next prime is 1203100001. The reversal of 1203099989 is 9899903021.

It is a de Polignac number, because none of the positive numbers 2^k-1203099989 is a prime.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203099959) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 303152 + ... + 307094.

It is an arithmetic number, because the mean of its divisors is an integer number (62946240).

Almost surely, 2^1203099989 is an apocalyptic number.

It is an amenable number.

1203099989 is a deficient number, since it is larger than the sum of its proper divisors (307609771).

1203099989 is a wasteful number, since it uses less digits than its factorization.

1203099989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4449 (or 4442 counting only the distinct ones).

The product of its (nonzero) digits is 314928, while the sum is 50.

The square root of 1203099989 is about 34685.7317783552. The cubic root of 1203099989 is about 1063.5728461969.

The spelling of 1203099989 in words is "one billion, two hundred three million, ninety-nine thousand, nine hundred eighty-nine".