140037389 has 2 divisors, whose sum is σ = 140037390. Its totient is φ = 140037388.

The previous prime is 140037377. The next prime is 140037413. The reversal of 140037389 is 983730041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102313225 + 37724164 = 10115^2 + 6142^2 .

It is a cyclic number.

It is not a de Polignac number, because 140037389 - 2²⁰ = 138988813 is a prime.

It is a super-2 number, since 2×140037389² = 39220940635874642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140037589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70018694 + 70018695.

It is an arithmetic number, because the mean of its divisors is an integer number (70018695).

Almost surely, 2^140037389 is an apocalyptic number.

It is an amenable number.

140037389 is a deficient number, since it is larger than the sum of its proper divisors (1).

140037389 is an equidigital number, since it uses as much as digits as its factorization.

140037389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 140037389 is about 11833.7394343462. The cubic root of 140037389 is about 519.2956303950.

The spelling of 140037389 in words is "one hundred forty million, thirty-seven thousand, three hundred eighty-nine".