13901623 has 2 divisors, whose sum is σ = 13901624. Its totient is φ = 13901622.

The previous prime is 13901621. The next prime is 13901633. The reversal of 13901623 is 32610931.

It is a weak prime.

It is an emirp because it is prime and its reverse (32610931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13901623 - 2¹ = 13901621 is a prime.

Together with 13901621, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13901621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6950811 + 6950812.

It is an arithmetic number, because the mean of its divisors is an integer number (6950812).

Almost surely, 2^13901623 is an apocalyptic number.

13901623 is a deficient number, since it is larger than the sum of its proper divisors (1).

13901623 is an equidigital number, since it uses as much as digits as its factorization.

13901623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 13901623 is about 3728.4880313607. The cubic root of 13901623 is about 240.4483690094.

The spelling of 13901623 in words is "thirteen million, nine hundred one thousand, six hundred twenty-three".