28969403 has 2 divisors, whose sum is σ = 28969404. Its totient is φ = 28969402.

The previous prime is 28969387. The next prime is 28969427. The reversal of 28969403 is 30496982.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28969403 - 2⁴ = 28969387 is a prime.

It is not a weakly prime, because it can be changed into another prime (28969453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14484701 + 14484702.

It is an arithmetic number, because the mean of its divisors is an integer number (14484702).

Almost surely, 2^28969403 is an apocalyptic number.

28969403 is a deficient number, since it is larger than the sum of its proper divisors (1).

28969403 is an equidigital number, since it uses as much as digits as its factorization.

28969403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 28969403 is about 5382.3231972820. The cubic root of 28969403 is about 307.1235943417.

The spelling of 28969403 in words is "twenty-eight million, nine hundred sixty-nine thousand, four hundred three".