9870045427 has 4 divisors (see below), whose sum is σ = 10767322296. Its totient is φ = 8972768560.

The previous prime is 9870045421. The next prime is 9870045431. The reversal of 9870045427 is 7245400789.

9870045427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7245400789 = 11 ⋅658672799.

It is a cyclic number.

It is not a de Polignac number, because 9870045427 - 2⁷ = 9870045299 is a prime.

It is a super-2 number, since 2×9870045427² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9870045421) 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 3 ways as a sum of consecutive naturals, for example, 448638418 + ... + 448638439.

It is an arithmetic number, because the mean of its divisors is an integer number (2691830574).

Almost surely, 2^9870045427 is an apocalyptic number.

9870045427 is a deficient number, since it is larger than the sum of its proper divisors (897276869).

9870045427 is a wasteful number, since it uses less digits than its factorization.

9870045427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897276868.

The product of its (nonzero) digits is 564480, while the sum is 46.

The square root of 9870045427 is about 99348.1022818252. The cubic root of 9870045427 is about 2145.0613470391.

The spelling of 9870045427 in words is "nine billion, eight hundred seventy million, forty-five thousand, four hundred twenty-seven".