7475749 has 2 divisors, whose sum is σ = 7475750. Its totient is φ = 7475748.

The previous prime is 7475747. The next prime is 7475761. The reversal of 7475749 is 9475747.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5832225 + 1643524 = 2415^2 + 1282^2 .

It is a cyclic number.

It is not a de Polignac number, because 7475749 - 2¹ = 7475747 is a prime.

It is a super-2 number, since 2×7475749² = 111773646222002, which contains 22 as substring.

Together with 7475747, it forms a pair of twin primes.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7475747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3737874 + 3737875.

It is an arithmetic number, because the mean of its divisors is an integer number (3737875).

Almost surely, 2^7475749 is an apocalyptic number.

It is an amenable number.

7475749 is a deficient number, since it is larger than the sum of its proper divisors (1).

7475749 is an equidigital number, since it uses as much as digits as its factorization.

7475749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 246960, while the sum is 43.

The square root of 7475749 is about 2734.1815960174. The cubic root of 7475749 is about 195.5321776868.

The spelling of 7475749 in words is "seven million, four hundred seventy-five thousand, seven hundred forty-nine".