140005397 has 16 divisors (see below), whose sum is σ = 165600000. Its totient is φ = 118293840.

The previous prime is 140005381. The next prime is 140005409. The reversal of 140005397 is 793500041.

It is not a de Polignac number, because 140005397 - 2⁴ = 140005381 is a prime.

It is a super-2 number, since 2×140005397² = 39203022378255218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140005337) 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, 21479 + ... + 27227.

It is an arithmetic number, because the mean of its divisors is an integer number (10350000).

Almost surely, 2^140005397 is an apocalyptic number.

It is an amenable number.

140005397 is a deficient number, since it is larger than the sum of its proper divisors (25594603).

140005397 is an frugal number, since it uses more digits than its factorization.

140005397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5841 (or 5827 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 140005397 is about 11832.3876288769. The cubic root of 140005397 is about 519.2560824543.

The spelling of 140005397 in words is "one hundred forty million, five thousand, three hundred ninety-seven".