2397739 has 4 divisors (see below), whose sum is σ = 2400840. Its totient is φ = 2394640.

The previous prime is 2397719. The next prime is 2397793. The reversal of 2397739 is 9377932.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2397739 - 2¹³ = 2389547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2397719) 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, 672 + ... + 2290.

It is an arithmetic number, because the mean of its divisors is an integer number (600210).

2^2397739 is an apocalyptic number.

2397739 is a deficient number, since it is larger than the sum of its proper divisors (3101).

2397739 is a wasteful number, since it uses less digits than its factorization.

2397739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3100.

The product of its digits is 71442, while the sum is 40.

The square root of 2397739 is about 1548.4634319221. The cubic root of 2397739 is about 133.8445326982.

It can be divided in two parts, 2397 and 739, that added together give a square (3136 = 56²).

The spelling of 2397739 in words is "two million, three hundred ninety-seven thousand, seven hundred thirty-nine".