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74479 = 711049
BaseRepresentation
bin10010001011101111
310210011111
4102023233
54340404
61332451
7430066
oct221357
9123144
1074479
1150a59
1237127
1327b92
141d1dd
1517104
hex122ef

74479 has 4 divisors (see below), whose sum is σ = 75600. Its totient is φ = 73360.

The previous prime is 74471. The next prime is 74489. The reversal of 74479 is 97447.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97447 = 713921.

It is a cyclic number.

It is not a de Polignac number, because 74479 - 23 = 74471 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 74479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74471) 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, 454 + ... + 595.

It is an arithmetic number, because the mean of its divisors is an integer number (18900).

274479 is an apocalyptic number.

74479 is a deficient number, since it is larger than the sum of its proper divisors (1121).

74479 is a wasteful number, since it uses less digits than its factorization.

74479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120.

The product of its digits is 7056, while the sum is 31.

The square root of 74479 is about 272.9084095443. The cubic root of 74479 is about 42.0737555129.

The spelling of 74479 in words is "seventy-four thousand, four hundred seventy-nine".

Divisors: 1 71 1049 74479