403120091 has 12 divisors (see below), whose sum is σ = 444166800. Its totient is φ = 365589840.

The previous prime is 403120049. The next prime is 403120111. The reversal of 403120091 is 190021304.

It is not a de Polignac number, because 403120091 - 2¹⁸ = 402857947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (403120591) 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, 49325 + ... + 56913.

It is an arithmetic number, because the mean of its divisors is an integer number (37013900).

Almost surely, 2^403120091 is an apocalyptic number.

403120091 is a deficient number, since it is larger than the sum of its proper divisors (41046709).

403120091 is a wasteful number, since it uses less digits than its factorization.

403120091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8050 (or 8039 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 403120091 is about 20077.8507564928. The cubic root of 403120091 is about 738.7170923545.

Adding to 403120091 its reverse (190021304), we get a palindrome (593141395).

The spelling of 403120091 in words is "four hundred three million, one hundred twenty thousand, ninety-one".