22779901 has 8 divisors (see below), whose sum is σ = 23781464. Its totient is φ = 21798720.

The previous prime is 22779899. The next prime is 22779907. The reversal of 22779901 is 10997722.

It can be written as a sum of positive squares in 4 ways, for example, as 2295225 + 20484676 = 1515^2 + 4526^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22779901 - 2¹ = 22779899 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22779907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2790 + ... + 7303.

It is an arithmetic number, because the mean of its divisors is an integer number (2972683).

Almost surely, 2^22779901 is an apocalyptic number.

It is an amenable number.

22779901 is a deficient number, since it is larger than the sum of its proper divisors (1001563).

22779901 is a wasteful number, since it uses less digits than its factorization.

22779901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10191.

The product of its (nonzero) digits is 15876, while the sum is 37.

The square root of 22779901 is about 4772.8294543174. The cubic root of 22779901 is about 283.4766406147.

The spelling of 22779901 in words is "twenty-two million, seven hundred seventy-nine thousand, nine hundred one".