245849990 has 16 divisors (see below), whose sum is σ = 461770848. Its totient is φ = 94064256.

The previous prime is 245849983. The next prime is 245849999. The reversal of 245849990 is 99948542.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245849999) by changing a digit.

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, 534227 + ... + 534686.

It is an arithmetic number, because the mean of its divisors is an integer number (28860678).

Almost surely, 2^245849990 is an apocalyptic number.

245849990 is a deficient number, since it is larger than the sum of its proper divisors (215920858).

245849990 is a wasteful number, since it uses less digits than its factorization.

245849990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1068943.

The product of its (nonzero) digits is 933120, while the sum is 50.

The square root of 245849990 is about 15679.6042679654. The cubic root of 245849990 is about 626.4552670200.

The spelling of 245849990 in words is "two hundred forty-five million, eight hundred forty-nine thousand, nine hundred ninety".