2973739 has 4 divisors (see below), whose sum is σ = 3103056. Its totient is φ = 2844424.

The previous prime is 2973721. The next prime is 2973767. The reversal of 2973739 is 9373792.

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 2973739 - 2⁷ = 2973611 is a prime.

It is a Duffinian number.

2973739 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2973239) 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, 64624 + ... + 64669.

It is an arithmetic number, because the mean of its divisors is an integer number (775764).

2^2973739 is an apocalyptic number.

2973739 is a deficient number, since it is larger than the sum of its proper divisors (129317).

2973739 is a wasteful number, since it uses less digits than its factorization.

2973739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129316.

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

The square root of 2973739 is about 1724.4532466843. The cubic root of 2973739 is about 143.8028906822.

The spelling of 2973739 in words is "two million, nine hundred seventy-three thousand, seven hundred thirty-nine".