749742444 has 36 divisors (see below), whose sum is σ = 2067472680. Its totient is φ = 227194560.

The previous prime is 749742443. The next prime is 749742467. The reversal of 749742444 is 444247947.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×749742444² = 1124227464670186272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 749742444.

It is not an unprimeable number, because it can be changed into a prime (749742443) 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 in 11 ways as a sum of consecutive naturals, for example, 946249 + ... + 947040.

Almost surely, 2^749742444 is an apocalyptic number.

It is an amenable number.

749742444 is an abundant number, since it is smaller than the sum of its proper divisors (1317730236).

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

749742444 is a wasteful number, since it uses less digits than its factorization.

749742444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1893310 (or 1893305 counting only the distinct ones).

The product of its digits is 903168, while the sum is 45.

The square root of 749742444 is about 27381.4251637858. The cubic root of 749742444 is about 908.4562822173.

The spelling of 749742444 in words is "seven hundred forty-nine million, seven hundred forty-two thousand, four hundred forty-four".