140994437 has 2 divisors, whose sum is σ = 140994438. Its totient is φ = 140994436.

The previous prime is 140994431. The next prime is 140994461. The reversal of 140994437 is 734499041.

140994437 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122965921 + 18028516 = 11089^2 + 4246^2 .

It is a cyclic number.

It is not a de Polignac number, because 140994437 - 2⁸ = 140994181 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 140994394 and 140994403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140994431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70497218 + 70497219.

It is an arithmetic number, because the mean of its divisors is an integer number (70497219).

Almost surely, 2^140994437 is an apocalyptic number.

It is an amenable number.

140994437 is a deficient number, since it is larger than the sum of its proper divisors (1).

140994437 is an equidigital number, since it uses as much as digits as its factorization.

140994437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 140994437 is about 11874.1078401706. The cubic root of 140994437 is about 520.4759412240.

The spelling of 140994437 in words is "one hundred forty million, nine hundred ninety-four thousand, four hundred thirty-seven".