474043721 has 2 divisors, whose sum is σ = 474043722. Its totient is φ = 474043720.

The previous prime is 474043709. The next prime is 474043727. The reversal of 474043721 is 127340474.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 473497600 + 546121 = 21760^2 + 739^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-474043721 is a prime.

It is not a weakly prime, because it can be changed into another prime (474043727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237021860 + 237021861.

It is an arithmetic number, because the mean of its divisors is an integer number (237021861).

Almost surely, 2^474043721 is an apocalyptic number.

It is an amenable number.

474043721 is a deficient number, since it is larger than the sum of its proper divisors (1).

474043721 is an equidigital number, since it uses as much as digits as its factorization.

474043721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18816, while the sum is 32.

The square root of 474043721 is about 21772.5451199441. The cubic root of 474043721 is about 779.7214219944.

The spelling of 474043721 in words is "four hundred seventy-four million, forty-three thousand, seven hundred twenty-one".