29138623 has 2 divisors, whose sum is σ = 29138624. Its totient is φ = 29138622.

The previous prime is 29138581. The next prime is 29138639. The reversal of 29138623 is 32683192.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 29138623 - 2¹⁷ = 29007551 is a prime.

It is a super-2 number, since 2×29138623² = 1698118700672258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29138653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14569311 + 14569312.

It is an arithmetic number, because the mean of its divisors is an integer number (14569312).

Almost surely, 2^29138623 is an apocalyptic number.

29138623 is a deficient number, since it is larger than the sum of its proper divisors (1).

29138623 is an equidigital number, since it uses as much as digits as its factorization.

29138623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 34.

The square root of 29138623 is about 5398.0202852527. The cubic root of 29138623 is about 307.7204377022.

The spelling of 29138623 in words is "twenty-nine million, one hundred thirty-eight thousand, six hundred twenty-three".