89878783 has 2 divisors, whose sum is σ = 89878784. Its totient is φ = 89878782.

The previous prime is 89878769. The next prime is 89878807. The reversal of 89878783 is 38787898.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89878783 is a prime.

It is a super-2 number, since 2×89878783² = 16156391267122178, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89878753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44939391 + 44939392.

It is an arithmetic number, because the mean of its divisors is an integer number (44939392).

Almost surely, 2^89878783 is an apocalyptic number.

89878783 is a deficient number, since it is larger than the sum of its proper divisors (1).

89878783 is an equidigital number, since it uses as much as digits as its factorization.

89878783 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5419008, while the sum is 58.

The square root of 89878783 is about 9480.4421310401. The cubic root of 89878783 is about 447.9391907659.

The spelling of 89878783 in words is "eighty-nine million, eight hundred seventy-eight thousand, seven hundred eighty-three".