7474729 has 4 divisors (see below), whose sum is σ = 7531920. Its totient is φ = 7417540.

The previous prime is 7474717. The next prime is 7474759. The reversal of 7474729 is 9274747.

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 cyclic number.

It is not a de Polignac number, because 7474729 - 2¹⁵ = 7441961 is a prime.

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

It is a Duffinian number.

7474729 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 7474691 and 7474700.

It is not an unprimeable number, because it can be changed into a prime (7474759) 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, 28399 + ... + 28660.

It is an arithmetic number, because the mean of its divisors is an integer number (1882980).

Almost surely, 2^7474729 is an apocalyptic number.

It is an amenable number.

7474729 is a deficient number, since it is larger than the sum of its proper divisors (57191).

7474729 is a wasteful number, since it uses less digits than its factorization.

7474729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57190.

The product of its digits is 98784, while the sum is 40.

The square root of 7474729 is about 2733.9950621755. The cubic root of 7474729 is about 195.5232844021.

It can be divided in two parts, 747 and 4729, that added together give a square (5476 = 74²).

The spelling of 7474729 in words is "seven million, four hundred seventy-four thousand, seven hundred twenty-nine".