89901391 has 2 divisors, whose sum is σ = 89901392. Its totient is φ = 89901390.

The previous prime is 89901377. The next prime is 89901437. The reversal of 89901391 is 19310998.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89901391 - 2²¹ = 87804239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89901311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44950695 + 44950696.

It is an arithmetic number, because the mean of its divisors is an integer number (44950696).

Almost surely, 2^89901391 is an apocalyptic number.

89901391 is a deficient number, since it is larger than the sum of its proper divisors (1).

89901391 is an equidigital number, since it uses as much as digits as its factorization.

89901391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 40.

The square root of 89901391 is about 9481.6344055231. The cubic root of 89901391 is about 447.9767456440.

The spelling of 89901391 in words is "eighty-nine million, nine hundred one thousand, three hundred ninety-one".