253890149 has 4 divisors (see below), whose sum is σ = 255205836. Its totient is φ = 252574464.

The previous prime is 253890139. The next prime is 253890151. The reversal of 253890149 is 941098352.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 160149025 + 93741124 = 12655^2 + 9682^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253890149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253890139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 657554 + ... + 657939.

It is an arithmetic number, because the mean of its divisors is an integer number (63801459).

Almost surely, 2^253890149 is an apocalyptic number.

It is an amenable number.

253890149 is a deficient number, since it is larger than the sum of its proper divisors (1315687).

253890149 is a wasteful number, since it uses less digits than its factorization.

253890149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315686.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 253890149 is about 15933.9307454250. The cubic root of 253890149 is about 633.2112421779.

The spelling of 253890149 in words is "two hundred fifty-three million, eight hundred ninety thousand, one hundred forty-nine".