719440261 has 4 divisors (see below), whose sum is σ = 719547552. Its totient is φ = 719332972.

The previous prime is 719440259. The next prime is 719440279. The reversal of 719440261 is 162044917.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 719440261 - 2¹ = 719440259 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 (719440291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42865 + ... + 57238.

It is an arithmetic number, because the mean of its divisors is an integer number (179886888).

Almost surely, 2^719440261 is an apocalyptic number.

It is an amenable number.

719440261 is a deficient number, since it is larger than the sum of its proper divisors (107291).

719440261 is a wasteful number, since it uses less digits than its factorization.

719440261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107290.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 719440261 is about 26822.3835816282. The cubic root of 719440261 is about 896.0486282633.

The spelling of 719440261 in words is "seven hundred nineteen million, four hundred forty thousand, two hundred sixty-one".