749701417609 has 27 divisors (see below), whose sum is σ = 789156025983. Its totient is φ = 712188336384.

The previous prime is 749701417567. The next prime is 749701417679. The reversal of 749701417609 is 906714107947.

It is a happy number.

The square root of 749701417609 is 865853.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 31228191225 + 718473226384 = 176715^2 + 847628^2 .

It is not a de Polignac number, because 749701417609 - 2¹³ = 749701409417 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 749701417609.

It is not an unprimeable number, because it can be changed into a prime (749701417679) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1833010597 + ... + 1833011005.

Almost surely, 2^749701417609 is an apocalyptic number.

749701417609 is the 865853-rd square number.

749701417609 is the 432927-th centered octagonal number.

It is an amenable number.

749701417609 is a deficient number, since it is larger than the sum of its proper divisors (39454608374).

749701417609 is an frugal number, since it uses more digits than its factorization.

749701417609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022 (or 511 counting only the distinct ones).

The product of its (nonzero) digits is 2667168, while the sum is 55.

The spelling of 749701417609 in words is "seven hundred forty-nine billion, seven hundred one million, four hundred seventeen thousand, six hundred nine".