1203990349 has 2 divisors, whose sum is σ = 1203990350. Its totient is φ = 1203990348.

The previous prime is 1203990331. The next prime is 1203990377. The reversal of 1203990349 is 9430993021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1168409124 + 35581225 = 34182^2 + 5965^2 .

It is an emirp because it is prime and its reverse (9430993021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1203990349 - 2⁵ = 1203990317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1203990329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601995174 + 601995175.

It is an arithmetic number, because the mean of its divisors is an integer number (601995175).

Almost surely, 2^1203990349 is an apocalyptic number.

It is an amenable number.

1203990349 is a deficient number, since it is larger than the sum of its proper divisors (1).

1203990349 is an equidigital number, since it uses as much as digits as its factorization.

1203990349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52488, while the sum is 40.

The square root of 1203990349 is about 34698.5640769182. The cubic root of 1203990349 is about 1063.8351489211.

The spelling of 1203990349 in words is "one billion, two hundred three million, nine hundred ninety thousand, three hundred forty-nine".