140949890 has 32 divisors (see below), whose sum is σ = 270396144. Its totient is φ = 52715520.

The previous prime is 140949883. The next prime is 140949917. The reversal of 140949890 is 98949041.

It can be written as a sum of positive squares in 8 ways, for example, as 38353249 + 102596641 = 6193^2 + 10129^2 .

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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, 24050 + ... + 29330.

Almost surely, 2^140949890 is an apocalyptic number.

140949890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

140949890 is a deficient number, since it is larger than the sum of its proper divisors (129446254).

140949890 is a wasteful number, since it uses less digits than its factorization.

140949890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5462.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 140949890 is about 11872.2318878971. The cubic root of 140949890 is about 520.4211208956.

The spelling of 140949890 in words is "one hundred forty million, nine hundred forty-nine thousand, eight hundred ninety".