13920090 has 16 divisors (see below), whose sum is σ = 33408288. Its totient is φ = 3712016.

The previous prime is 13920061. The next prime is 13920113. The reversal of 13920090 is 9002931.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 13920090.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231972 + ... + 232031.

It is an arithmetic number, because the mean of its divisors is an integer number (2088018).

Almost surely, 2^13920090 is an apocalyptic number.

13920090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13920090 is an abundant number, since it is smaller than the sum of its proper divisors (19488198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13920090 is a wasteful number, since it uses less digits than its factorization.

13920090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464013.

The product of its (nonzero) digits is 486, while the sum is 24.

The square root of 13920090 is about 3730.9636824820. The cubic root of 13920090 is about 240.5547929207.

The spelling of 13920090 in words is "thirteen million, nine hundred twenty thousand, ninety".