43919442 has 32 divisors (see below), whose sum is σ = 111542400. Its totient is φ = 12548304.

The previous prime is 43919441. The next prime is 43919461. The reversal of 43919442 is 24491934.

It is a junction number, because it is equal to n+sod(n) for n = 43919397 and 43919406.

It is not an unprimeable number, because it can be changed into a prime (43919441) 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 15 ways as a sum of consecutive naturals, for example, 57717 + ... + 58472.

It is an arithmetic number, because the mean of its divisors is an integer number (3485700).

Almost surely, 2^43919442 is an apocalyptic number.

43919442 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

43919442 is an abundant number, since it is smaller than the sum of its proper divisors (67622958).

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

43919442 is a wasteful number, since it uses less digits than its factorization.

43919442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116207 (or 116201 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 43919442 is about 6627.1745110567. The cubic root of 43919442 is about 352.8192490307.

It can be divided in two parts, 439 and 19442, that added together give a square (19881 = 141²).

The spelling of 43919442 in words is "forty-three million, nine hundred nineteen thousand, four hundred forty-two".