988624427 has 4 divisors (see below), whose sum is σ = 1129856496. Its totient is φ = 847392360.

The previous prime is 988624421. The next prime is 988624451. The reversal of 988624427 is 724426889.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 724426889 = 19 ⋅38127731.

It is a cyclic number.

It is not a de Polignac number, because 988624427 - 2⁶ = 988624363 is a prime.

It is a super-2 number, since 2×988624427² = 1954756515322156658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (988624421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70616024 + ... + 70616037.

It is an arithmetic number, because the mean of its divisors is an integer number (282464124).

Almost surely, 2^988624427 is an apocalyptic number.

988624427 is a deficient number, since it is larger than the sum of its proper divisors (141232069).

988624427 is a wasteful number, since it uses less digits than its factorization.

988624427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141232068.

The product of its digits is 1548288, while the sum is 50.

The square root of 988624427 is about 31442.3985567259. The cubic root of 988624427 is about 996.1936725871.

The spelling of 988624427 in words is "nine hundred eighty-eight million, six hundred twenty-four thousand, four hundred twenty-seven".