988619 has 4 divisors (see below), whose sum is σ = 993096. Its totient is φ = 984144.

The previous prime is 988607. The next prime is 988643. The reversal of 988619 is 916889.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 916889 = 43 ⋅21323.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-988619 is a prime.

It is a super-2 number, since 2×988619² = 1954735054322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (988649) 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, 1889 + ... + 2354.

It is an arithmetic number, because the mean of its divisors is an integer number (248274).

2⁹⁸⁸⁶¹⁹ is an apocalyptic number.

988619 is a deficient number, since it is larger than the sum of its proper divisors (4477).

988619 is a wasteful number, since it uses less digits than its factorization.

988619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4476.

The product of its digits is 31104, while the sum is 41.

The square root of 988619 is about 994.2932163100. The cubic root of 988619 is about 99.6191849733.

The spelling of 988619 in words is "nine hundred eighty-eight thousand, six hundred nineteen".