2149797 has 16 divisors (see below), whose sum is σ = 3113600. Its totient is φ = 1311552.

The previous prime is 2149789. The next prime is 2149813. The reversal of 2149797 is 7979412.

It is not a de Polignac number, because 2149797 - 2³ = 2149789 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2149727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7623 + ... + 7899.

It is an arithmetic number, because the mean of its divisors is an integer number (194600).

2^2149797 is an apocalyptic number.

It is an amenable number.

2149797 is a deficient number, since it is larger than the sum of its proper divisors (963803).

2149797 is a wasteful number, since it uses less digits than its factorization.

2149797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492.

The product of its digits is 31752, while the sum is 39.

The square root of 2149797 is about 1466.2186058020. The cubic root of 2149797 is about 129.0622258533.

It can be divided in two parts, 214 and 9797, that added together give a triangular number (10011 = T₁₄₁).

The spelling of 2149797 in words is "two million, one hundred forty-nine thousand, seven hundred ninety-seven".