722839901 has 4 divisors (see below), whose sum is σ = 826102752. Its totient is φ = 619577052.

The previous prime is 722839841. The next prime is 722839903. The reversal of 722839901 is 109938227.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 109938227 = 7 ⋅15705461.

It is a cyclic number.

It is not a de Polignac number, because 722839901 - 2²² = 718645597 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 (722839903) 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, 51631415 + ... + 51631428.

It is an arithmetic number, because the mean of its divisors is an integer number (206525688).

Almost surely, 2^722839901 is an apocalyptic number.

It is an amenable number.

722839901 is a deficient number, since it is larger than the sum of its proper divisors (103262851).

722839901 is a wasteful number, since it uses less digits than its factorization.

722839901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103262850.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 722839901 is about 26885.6820817326. The cubic root of 722839901 is about 897.4578057615.

The spelling of 722839901 in words is "seven hundred twenty-two million, eight hundred thirty-nine thousand, nine hundred one".