723917412 has 42 divisors (see below), whose sum is σ = 1899421958. Its totient is φ = 241304832.

The previous prime is 723917357. The next prime is 723917413. The reversal of 723917412 is 214719327.

723917412 is a `hidden beast` number, since 7 + 239 + 1 + 7 + 412 = 666.

It can be written as a sum of positive squares in only one way, i.e., 587868516 + 136048896 = 24246^2 + 11664^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (723917413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 121213 + ... + 127044.

Almost surely, 2^723917412 is an apocalyptic number.

It is an amenable number.

723917412 is an abundant number, since it is smaller than the sum of its proper divisors (1175504546).

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

723917412 is a wasteful number, since it uses less digits than its factorization.

723917412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248279 (or 248262 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 723917412 is about 26905.7133709552. The cubic root of 723917412 is about 897.9035202058.

The spelling of 723917412 in words is "seven hundred twenty-three million, nine hundred seventeen thousand, four hundred twelve".