140995890 has 144 divisors (see below), whose sum is σ = 436468032. Its totient is φ = 32122656.

The previous prime is 140995889. The next prime is 140995913. The reversal of 140995890 is 98599041.

140995890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 459117 + ... + 459423.

It is an arithmetic number, because the mean of its divisors is an integer number (3031028).

Almost surely, 2^140995890 is an apocalyptic number.

140995890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 140995890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (218234016).

140995890 is an abundant number, since it is smaller than the sum of its proper divisors (295472142).

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

140995890 is an frugal number, since it uses more digits than its factorization.

140995890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345 (or 324 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The square root of 140995890 is about 11874.1690235570. The cubic root of 140995890 is about 520.4777291171.

The spelling of 140995890 in words is "one hundred forty million, nine hundred ninety-five thousand, eight hundred ninety".