7896749 has 4 divisors (see below), whose sum is σ = 9024864. Its totient is φ = 6768636.

The previous prime is 7896743. The next prime is 7896767. The reversal of 7896749 is 9476987.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-7896749 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7896697 and 7896706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7896743) 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, 564047 + ... + 564060.

It is an arithmetic number, because the mean of its divisors is an integer number (2256216).

Almost surely, 2^7896749 is an apocalyptic number.

It is an amenable number.

7896749 is a deficient number, since it is larger than the sum of its proper divisors (1128115).

7896749 is a wasteful number, since it uses less digits than its factorization.

7896749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128114.

The product of its digits is 762048, while the sum is 50.

The square root of 7896749 is about 2810.1154780542. The cubic root of 7896749 is about 199.1358465719.

The spelling of 7896749 in words is "seven million, eight hundred ninety-six thousand, seven hundred forty-nine".