140036397 has 16 divisors (see below), whose sum is σ = 196044288. Its totient is φ = 88743600.

The previous prime is 140036381. The next prime is 140036401. The reversal of 140036397 is 793630041.

It is not a de Polignac number, because 140036397 - 2⁴ = 140036381 is a prime.

It is a super-2 number, since 2×140036397² = 39220384969483218, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140036317) 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, 5022 + ... + 17472.

It is an arithmetic number, because the mean of its divisors is an integer number (12252768).

Almost surely, 2^140036397 is an apocalyptic number.

It is an amenable number.

140036397 is a deficient number, since it is larger than the sum of its proper divisors (56007891).

140036397 is a wasteful number, since it uses less digits than its factorization.

140036397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12640.

The product of its (nonzero) digits is 13608, while the sum is 33.

The square root of 140036397 is about 11833.6975202174. The cubic root of 140036397 is about 519.2944041928.

The spelling of 140036397 in words is "one hundred forty million, thirty-six thousand, three hundred ninety-seven".