29900043 has 8 divisors (see below), whose sum is σ = 44296400. Its totient is φ = 19933344.

The previous prime is 29900021. The next prime is 29900051. The reversal of 29900043 is 34000992.

It is not a de Polignac number, because 29900043 - 2¹² = 29895947 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1107409 = 29900043 / (2 + 9 + 9 + 0 + 0 + 0 + 4 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29900083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 553678 + ... + 553731.

It is an arithmetic number, because the mean of its divisors is an integer number (5537050).

Almost surely, 2^29900043 is an apocalyptic number.

29900043 is a deficient number, since it is larger than the sum of its proper divisors (14396357).

29900043 is a wasteful number, since it uses less digits than its factorization.

29900043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1107418 (or 1107412 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 29900043 is about 5468.0931776992. The cubic root of 29900043 is about 310.3777670057.

The spelling of 29900043 in words is "twenty-nine million, nine hundred thousand, forty-three".