744029981 has 2 divisors, whose sum is σ = 744029982. Its totient is φ = 744029980.

The previous prime is 744029899. The next prime is 744030031. The reversal of 744029981 is 189920447.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 611572900 + 132457081 = 24730^2 + 11509^2 .

It is a cyclic number.

It is not a de Polignac number, because 744029981 - 2²⁶ = 676921117 is a prime.

It is a super-2 number, since 2×744029981² = 1107161225253720722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (744029381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372014990 + 372014991.

It is an arithmetic number, because the mean of its divisors is an integer number (372014991).

Almost surely, 2^744029981 is an apocalyptic number.

It is an amenable number.

744029981 is a deficient number, since it is larger than the sum of its proper divisors (1).

744029981 is an equidigital number, since it uses as much as digits as its factorization.

744029981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 744029981 is about 27276.9129668297. The cubic root of 744029981 is about 906.1431505196.

The spelling of 744029981 in words is "seven hundred forty-four million, twenty-nine thousand, nine hundred eighty-one".