749149 has 2 divisors, whose sum is σ = 749150. Its totient is φ = 749148.

The previous prime is 749143. The next prime is 749153. The reversal of 749149 is 941947.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 648025 + 101124 = 805^2 + 318^2 .

It is an emirp because it is prime and its reverse (941947) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 749149 - 2⁹ = 748637 is a prime.

It is a super-2 number, since 2×749149² = 1122448448402, which contains 22 as substring.

749149 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (749143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 374574 + 374575.

It is an arithmetic number, because the mean of its divisors is an integer number (374575).

2⁷⁴⁹¹⁴⁹ is an apocalyptic number.

It is an amenable number.

749149 is a deficient number, since it is larger than the sum of its proper divisors (1).

749149 is an equidigital number, since it uses as much as digits as its factorization.

749149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 34.

The square root of 749149 is about 865.5339392537. The cubic root of 749149 is about 90.8216528668.

It can be divided in two parts, 749 and 149, that added together give a palindrome (898).

The spelling of 749149 in words is "seven hundred forty-nine thousand, one hundred forty-nine".