747944861 has 8 divisors (see below), whose sum is σ = 788486880. Its totient is φ = 707520528.

The previous prime is 747944849. The next prime is 747944863. The reversal of 747944861 is 168449747.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 747944861 - 2¹⁰ = 747943837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (747944863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16211 + ... + 41936.

It is an arithmetic number, because the mean of its divisors is an integer number (98560860).

Almost surely, 2^747944861 is an apocalyptic number.

It is an amenable number.

747944861 is a deficient number, since it is larger than the sum of its proper divisors (40542019).

747944861 is a wasteful number, since it uses less digits than its factorization.

747944861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58843.

The product of its digits is 1354752, while the sum is 50.

The square root of 747944861 is about 27348.5806030222. The cubic root of 747944861 is about 907.7296627238.

The spelling of 747944861 in words is "seven hundred forty-seven million, nine hundred forty-four thousand, eight hundred sixty-one".