2154379 has 4 divisors (see below), whose sum is σ = 2161576. Its totient is φ = 2147184.

The previous prime is 2154331. The next prime is 2154389. The reversal of 2154379 is 9734512.

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

It is a cyclic number.

It is not a de Polignac number, because 2154379 - 2¹⁹ = 1630091 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2154379.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154319) 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, 3129 + ... + 3754.

It is an arithmetic number, because the mean of its divisors is an integer number (540394).

2^2154379 is an apocalyptic number.

2154379 is a deficient number, since it is larger than the sum of its proper divisors (7197).

2154379 is an equidigital number, since it uses as much as digits as its factorization.

2154379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7196.

The product of its digits is 7560, while the sum is 31.

The square root of 2154379 is about 1467.7802969110. The cubic root of 2154379 is about 129.1538536487.

The spelling of 2154379 in words is "two million, one hundred fifty-four thousand, three hundred seventy-nine".