719974421 has 2 divisors, whose sum is σ = 719974422. Its totient is φ = 719974420.

The previous prime is 719974417. The next prime is 719974433. The reversal of 719974421 is 124479917.

719974421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 709156900 + 10817521 = 26630^2 + 3289^2 .

It is an emirp because it is prime and its reverse (124479917) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 719974421 - 2² = 719974417 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (719974621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 359987210 + 359987211.

It is an arithmetic number, because the mean of its divisors is an integer number (359987211).

Almost surely, 2^719974421 is an apocalyptic number.

It is an amenable number.

719974421 is a deficient number, since it is larger than the sum of its proper divisors (1).

719974421 is an equidigital number, since it uses as much as digits as its factorization.

719974421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 44.

The square root of 719974421 is about 26832.3390892408. The cubic root of 719974421 is about 896.2703353106.

The spelling of 719974421 in words is "seven hundred nineteen million, nine hundred seventy-four thousand, four hundred twenty-one".