13400990 has 32 divisors (see below), whose sum is σ = 25159680. Its totient is φ = 5133600.

The previous prime is 13400971. The next prime is 13401041. The reversal of 13400990 is 9900431.

13400990 = T₁₂₄ + T₁₂₅ + ... + T₄₃₄.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42935 + ... + 43245.

It is an arithmetic number, because the mean of its divisors is an integer number (786240).

Almost surely, 2^13400990 is an apocalyptic number.

13400990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13400990 is a deficient number, since it is larger than the sum of its proper divisors (11758690).

13400990 is a wasteful number, since it uses less digits than its factorization.

13400990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 13400990 is about 3660.7362647424. The cubic root of 13400990 is about 237.5266230543.

The spelling of 13400990 in words is "thirteen million, four hundred thousand, nine hundred ninety".