7039649 has 4 divisors (see below), whose sum is σ = 7453764. Its totient is φ = 6625536.

The previous prime is 7039607. The next prime is 7039667. The reversal of 7039649 is 9469307.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9469307 = 23 ⋅411709.

It can be written as a sum of positive squares in 2 ways, for example, as 6150400 + 889249 = 2480^2 + 943^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7039649 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7039699) 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, 207032 + ... + 207065.

It is an arithmetic number, because the mean of its divisors is an integer number (1863441).

Almost surely, 2^7039649 is an apocalyptic number.

It is an amenable number.

7039649 is a deficient number, since it is larger than the sum of its proper divisors (414115).

7039649 is a wasteful number, since it uses less digits than its factorization.

7039649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414114.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 7039649 is about 2653.2336874086. The cubic root of 7039649 is about 191.6536090243.

The spelling of 7039649 in words is "seven million, thirty-nine thousand, six hundred forty-nine".