90389097 has 12 divisors (see below), whose sum is σ = 132511600. Its totient is φ = 59359608.

The previous prime is 90389081. The next prime is 90389141. The reversal of 90389097 is 79098309.

It is a happy number.

It is not a de Polignac number, because 90389097 - 2⁴ = 90389081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90389197) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74347 + ... + 75552.

Almost surely, 2^90389097 is an apocalyptic number.

It is an amenable number.

90389097 is a deficient number, since it is larger than the sum of its proper divisors (42122503).

90389097 is a wasteful number, since it uses less digits than its factorization.

90389097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149972 (or 149969 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 90389097 is about 9507.3180760928. The cubic root of 90389097 is about 448.7853614383.

It can be divided in two parts, 903 and 89097, that added together give a square (90000 = 300²).

The spelling of 90389097 in words is "ninety million, three hundred eighty-nine thousand, ninety-seven".