29986749 has 24 divisors (see below), whose sum is σ = 46918872. Its totient is φ = 18345600.

The previous prime is 29986727. The next prime is 29986751. The reversal of 29986749 is 94768992.

It can be written as a sum of positive squares in 4 ways, for example, as 632025 + 29354724 = 795^2 + 5418^2 .

It is not a de Polignac number, because 29986749 - 2¹⁷ = 29855677 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 29986695 and 29986704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29986709) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22399 + ... + 23699.

It is an arithmetic number, because the mean of its divisors is an integer number (1954953).

Almost surely, 2^29986749 is an apocalyptic number.

It is an amenable number.

29986749 is a deficient number, since it is larger than the sum of its proper divisors (16932123).

29986749 is a wasteful number, since it uses less digits than its factorization.

29986749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1517 (or 1514 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

The square root of 29986749 is about 5476.0157961788. The cubic root of 29986749 is about 310.6774950381.

The spelling of 29986749 in words is "twenty-nine million, nine hundred eighty-six thousand, seven hundred forty-nine".