140990000 has 100 divisors (see below), whose sum is σ = 356773296. Its totient is φ = 53856000.

The previous prime is 140989997. The next prime is 140990039. The reversal of 140990000 is 99041.

It is a tau number, because it is divible by the number of its divisors (100).

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 229694 + ... + 230306.

Almost surely, 2^140990000 is an apocalyptic number.

140990000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140990000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178386648).

140990000 is an abundant number, since it is smaller than the sum of its proper divisors (215783296).

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

140990000 is an equidigital number, since it uses as much as digits as its factorization.

140990000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664 (or 643 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 140990000 is about 11873.9210036112. The cubic root of 140990000 is about 520.4704814909.

The spelling of 140990000 in words is "one hundred forty million, nine hundred ninety thousand".