9977442 has 16 divisors (see below), whose sum is σ = 20380032. Its totient is φ = 3254960.

The previous prime is 9977437. The next prime is 9977447. The reversal of 9977442 is 2447799.

It is an interprime number because it is at equal distance from previous prime (9977437) and next prime (9977447).

It is a d-powerful number, because it can be written as 9³ + 9³ + 7⁵ + 7⁸ + 4³ + 4¹¹ + 2³ .

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 9977394 and 9977403.

It is not an unprimeable number, because it can be changed into a prime (9977447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17409 + ... + 17972.

It is an arithmetic number, because the mean of its divisors is an integer number (1273752).

Almost surely, 2^9977442 is an apocalyptic number.

9977442 is an abundant number, since it is smaller than the sum of its proper divisors (10402590).

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

9977442 is a wasteful number, since it uses less digits than its factorization.

9977442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35433.

The product of its digits is 127008, while the sum is 42.

The square root of 9977442 is about 3158.7089134645. The cubic root of 9977442 is about 215.2813479120.

It can be divided in two parts, 9 and 977442, that multiplied together give a palindrome (8796978).

The spelling of 9977442 in words is "nine million, nine hundred seventy-seven thousand, four hundred forty-two".