1908401 has 4 divisors (see below), whose sum is σ = 2081904. Its totient is φ = 1734900.

The previous prime is 1908373. The next prime is 1908407. The reversal of 1908401 is 1048091.

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 1908401 - 2¹⁰ = 1907377 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1908407) 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, 86735 + ... + 86756.

It is an arithmetic number, because the mean of its divisors is an integer number (520476).

2^1908401 is an apocalyptic number.

1908401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1908401 is a deficient number, since it is larger than the sum of its proper divisors (173503).

1908401 is a wasteful number, since it uses less digits than its factorization.

1908401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173502.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 1908401 is about 1381.4488770852. The cubic root of 1908401 is about 124.0385112778.

The spelling of 1908401 in words is "one million, nine hundred eight thousand, four hundred one".