40269397 has 4 divisors (see below), whose sum is σ = 46022176. Its totient is φ = 34516620.

The previous prime is 40269377. The next prime is 40269473. The reversal of 40269397 is 79396204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40269397 - 2¹¹ = 40267349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40269367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2876379 + ... + 2876392.

It is an arithmetic number, because the mean of its divisors is an integer number (11505544).

Almost surely, 2^40269397 is an apocalyptic number.

It is an amenable number.

40269397 is a deficient number, since it is larger than the sum of its proper divisors (5752779).

40269397 is an equidigital number, since it uses as much as digits as its factorization.

40269397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5752778.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 40269397 is about 6345.8172838493. The cubic root of 40269397 is about 342.7612427799.

The spelling of 40269397 in words is "forty million, two hundred sixty-nine thousand, three hundred ninety-seven".