988844431 has 4 divisors (see below), whose sum is σ = 989252632. Its totient is φ = 988436232.

The previous prime is 988844429. The next prime is 988844513. The reversal of 988844431 is 134448889.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 988844431 - 2¹ = 988844429 is a prime.

It is a super-2 number, since 2×988844431² = 1955626617439427522, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (986844431) 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, 200445 + ... + 205318.

It is an arithmetic number, because the mean of its divisors is an integer number (247313158).

Almost surely, 2^988844431 is an apocalyptic number.

988844431 is a deficient number, since it is larger than the sum of its proper divisors (408201).

988844431 is a wasteful number, since it uses less digits than its factorization.

988844431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408200.

The product of its digits is 884736, while the sum is 49.

The square root of 988844431 is about 31445.8968865574. The cubic root of 988844431 is about 996.2675632482.

The spelling of 988844431 in words is "nine hundred eighty-eight million, eight hundred forty-four thousand, four hundred thirty-one".