2401389 has 6 divisors (see below), whose sum is σ = 3468686. Its totient is φ = 1600920.

The previous prime is 2401381. The next prime is 2401393. The reversal of 2401389 is 9831042.

It can be written as a sum of positive squares in only one way, i.e., 2125764 + 275625 = 1458^2 + 525^2 .

It is not a de Polignac number, because 2401389 - 2³ = 2401381 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2401381) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 133402 + ... + 133419.

2^2401389 is an apocalyptic number.

It is an amenable number.

2401389 is a deficient number, since it is larger than the sum of its proper divisors (1067297).

2401389 is a wasteful number, since it uses less digits than its factorization.

2401389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266827 (or 266824 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 2401389 is about 1549.6415714610. The cubic root of 2401389 is about 133.9124139899.

The spelling of 2401389 in words is "two million, four hundred one thousand, three hundred eighty-nine".