80493990 has 16 divisors (see below), whose sum is σ = 193185648. Its totient is φ = 21465056.

The previous prime is 80493989. The next prime is 80494019. The reversal of 80493990 is 9939408.

It is a super-2 number, since 2×80493990² = 12958564852240200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1341537 + ... + 1341596.

It is an arithmetic number, because the mean of its divisors is an integer number (12074103).

Almost surely, 2^80493990 is an apocalyptic number.

80493990 is an abundant number, since it is smaller than the sum of its proper divisors (112691658).

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

80493990 is a wasteful number, since it uses less digits than its factorization.

80493990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2683143.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 80493990 is about 8971.8442920060. The cubic root of 80493990 is about 431.7720097564.

The spelling of 80493990 in words is "eighty million, four hundred ninety-three thousand, nine hundred ninety".