749219777 has 2 divisors, whose sum is σ = 749219778. Its totient is φ = 749219776.

The previous prime is 749219741. The next prime is 749219813. The reversal of 749219777 is 777912947.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (749219741) and next prime (749219813).

It can be written as a sum of positive squares in only one way, i.e., 675792016 + 73427761 = 25996^2 + 8569^2 .

It is a cyclic number.

It is not a de Polignac number, because 749219777 - 2²⁰ = 748171201 is a prime.

It is a super-2 number, since 2×749219777² = 1122660548495859458, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (749216777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 374609888 + 374609889.

It is an arithmetic number, because the mean of its divisors is an integer number (374609889).

Almost surely, 2^749219777 is an apocalyptic number.

It is an amenable number.

749219777 is a deficient number, since it is larger than the sum of its proper divisors (1).

749219777 is an equidigital number, since it uses as much as digits as its factorization.

749219777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1555848, while the sum is 53.

The square root of 749219777 is about 27371.8793107086. The cubic root of 749219777 is about 908.2451294838.

The spelling of 749219777 in words is "seven hundred forty-nine million, two hundred nineteen thousand, seven hundred seventy-seven".