140440491870 has 32 divisors (see below), whose sum is σ = 385208206848. Its totient is φ = 32100683808.

The previous prime is 140440491869. The next prime is 140440491871. The reversal of 140440491870 is 78194044041.

It is an interprime number because it is at equal distance from previous prime (140440491869) and next prime (140440491871).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140440491871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 334381914 + ... + 334382333.

It is an arithmetic number, because the mean of its divisors is an integer number (12037756464).

Almost surely, 2^140440491870 is an apocalyptic number.

140440491870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

140440491870 is an abundant number, since it is smaller than the sum of its proper divisors (244767714978).

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

140440491870 is a wasteful number, since it uses less digits than its factorization.

140440491870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668764264.

The product of its (nonzero) digits is 129024, while the sum is 42.

The spelling of 140440491870 in words is "one hundred forty billion, four hundred forty million, four hundred ninety-one thousand, eight hundred seventy".