749439071 has 2 divisors, whose sum is σ = 749439072. Its totient is φ = 749439070.

The previous prime is 749439049. The next prime is 749439073. The reversal of 749439071 is 170934947.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (170934947) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 749439071 - 2²² = 745244767 is a prime.

It is a super-2 number, since 2×749439071² = 1123317842282686082, which contains 22 as substring.

Together with 749439073, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (749439073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 374719535 + 374719536.

It is an arithmetic number, because the mean of its divisors is an integer number (374719536).

Almost surely, 2^749439071 is an apocalyptic number.

749439071 is a deficient number, since it is larger than the sum of its proper divisors (1).

749439071 is an equidigital number, since it uses as much as digits as its factorization.

749439071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 190512, while the sum is 44.

The square root of 749439071 is about 27375.8848441470. The cubic root of 749439071 is about 908.3337342272. Note that the first 3 decimals are identical.

The spelling of 749439071 in words is "seven hundred forty-nine million, four hundred thirty-nine thousand, seventy-one".