7489943 has 2 divisors, whose sum is σ = 7489944. Its totient is φ = 7489942.

The previous prime is 7489939. The next prime is 7489949. The reversal of 7489943 is 3499847.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7489943 - 2² = 7489939 is a prime.

It is a super-2 number, since 2×7489943² = 112198492286498, which contains 22 as substring.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 7489894 and 7489903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7489949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3744971 + 3744972.

It is an arithmetic number, because the mean of its divisors is an integer number (3744972).

Almost surely, 2^7489943 is an apocalyptic number.

7489943 is a deficient number, since it is larger than the sum of its proper divisors (1).

7489943 is an equidigital number, since it uses as much as digits as its factorization.

7489943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 44.

The square root of 7489943 is about 2736.7760229876. The cubic root of 7489943 is about 195.6558499800.

The spelling of 7489943 in words is "seven million, four hundred eighty-nine thousand, nine hundred forty-three".