2401491 has 4 divisors (see below), whose sum is σ = 3201992. Its totient is φ = 1600992.

The previous prime is 2401489. The next prime is 2401501. The reversal of 2401491 is 1941042.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2401491 - 2¹ = 2401489 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2401891) 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, 400246 + ... + 400251.

It is an arithmetic number, because the mean of its divisors is an integer number (800498).

2^2401491 is an apocalyptic number.

2401491 is a deficient number, since it is larger than the sum of its proper divisors (800501).

2401491 is an equidigital number, since it uses as much as digits as its factorization.

2401491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800500.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 2401491 is about 1549.6744819477. The cubic root of 2401491 is about 133.9143099582.

The spelling of 2401491 in words is "two million, four hundred one thousand, four hundred ninety-one".