140434997 has 2 divisors, whose sum is σ = 140434998. Its totient is φ = 140434996.

The previous prime is 140434979. The next prime is 140435003. The reversal of 140434997 is 799434041.

Together with previous prime (140434979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114618436 + 25816561 = 10706^2 + 5081^2 .

It is a cyclic number.

It is not a de Polignac number, because 140434997 - 2⁶ = 140434933 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140434967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70217498 + 70217499.

It is an arithmetic number, because the mean of its divisors is an integer number (70217499).

Almost surely, 2^140434997 is an apocalyptic number.

It is an amenable number.

140434997 is a deficient number, since it is larger than the sum of its proper divisors (1).

140434997 is an equidigital number, since it uses as much as digits as its factorization.

140434997 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 140434997 is about 11850.5272878467. The cubic root of 140434997 is about 519.7866444744.

The spelling of 140434997 in words is "one hundred forty million, four hundred thirty-four thousand, nine hundred ninety-seven".