3722491 has 2 divisors, whose sum is σ = 3722492. Its totient is φ = 3722490.

The previous prime is 3722479. The next prime is 3722519. The reversal of 3722491 is 1942273.

It is an a-pointer prime, because the next prime (3722519) can be obtained adding 3722491 to its sum of digits (28).

It is a weak prime.

It is an emirp because it is prime and its reverse (1942273) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3722491 - 2¹⁵ = 3689723 is a prime.

It is a Chen prime.

3722491 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (3722291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1861245 + 1861246.

It is an arithmetic number, because the mean of its divisors is an integer number (1861246).

Almost surely, 2^3722491 is an apocalyptic number.

3722491 is a deficient number, since it is larger than the sum of its proper divisors (1).

3722491 is an equidigital number, since it uses as much as digits as its factorization.

3722491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 28.

The square root of 3722491 is about 1929.3758057983. The cubic root of 3722491 is about 154.9807954007.

The spelling of 3722491 in words is "three million, seven hundred twenty-two thousand, four hundred ninety-one".