7474739 has 8 divisors (see below), whose sum is σ = 7672320. Its totient is φ = 7278856.

The previous prime is 7474717. The next prime is 7474759. The reversal of 7474739 is 9374747.

7474739 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7474739 - 2⁸ = 7474483 is a prime.

It is a d-powerful number, because it can be written as 7⁵ + 4⁷ + 7⁵ + 4⁸ + 7⁸ + 3¹³ + 9² .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7474696 and 7474705.

It is not an unprimeable number, because it can be changed into a prime (7474759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16652 + ... + 17094.

It is an arithmetic number, because the mean of its divisors is an integer number (959040).

Almost surely, 2^7474739 is an apocalyptic number.

7474739 is a deficient number, since it is larger than the sum of its proper divisors (197581).

7474739 is a wasteful number, since it uses less digits than its factorization.

7474739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849.

The product of its digits is 148176, while the sum is 41.

The square root of 7474739 is about 2733.9968910004. The cubic root of 7474739 is about 195.5233715951.

The spelling of 7474739 in words is "seven million, four hundred seventy-four thousand, seven hundred thirty-nine".