4261339890 has 24 divisors (see below), whose sum is σ = 11079483948. Its totient is φ = 1136357280.

The previous prime is 4261339871. The next prime is 4261339909. The reversal of 4261339890 is 989331624.

It is a happy number.

4261339890 is a `hidden beast` number, since 426 + 133 + 9 + 8 + 90 = 666.

It is an interprime number because it is at equal distance from previous prime (4261339871) and next prime (4261339909).

It can be written as a sum of positive squares in 2 ways, for example, as 3968622009 + 292717881 = 62997^2 + 17109^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23674021 + ... + 23674200.

Almost surely, 2^4261339890 is an apocalyptic number.

4261339890 is an abundant number, since it is smaller than the sum of its proper divisors (6818144058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4261339890 is a wasteful number, since it uses less digits than its factorization.

4261339890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47348234 (or 47348231 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 4261339890 is about 65278.9390998353. The cubic root of 4261339890 is about 1621.2452816566.

The spelling of 4261339890 in words is "four billion, two hundred sixty-one million, three hundred thirty-nine thousand, eight hundred ninety".