712409436 has 18 divisors (see below), whose sum is σ = 1800812832. Its totient is φ = 237469800.

The previous prime is 712409431. The next prime is 712409437. The reversal of 712409436 is 634904217.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 19789151 = 712409436 / (7 + 1 + 2 + 4 + 0 + 9 + 4 + 3 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 712409436.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (712409431) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9894540 + ... + 9894611.

Almost surely, 2^712409436 is an apocalyptic number.

It is an amenable number.

712409436 is an abundant number, since it is smaller than the sum of its proper divisors (1088403396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

712409436 is a wasteful number, since it uses less digits than its factorization.

712409436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19789161 (or 19789156 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 712409436 is about 26690.9991570192. Note that the first 3 decimals coincide. The cubic root of 712409436 is about 893.1201499298.

The spelling of 712409436 in words is "seven hundred twelve million, four hundred nine thousand, four hundred thirty-six".