40097479 has 2 divisors, whose sum is σ = 40097480. Its totient is φ = 40097478.

The previous prime is 40097443. The next prime is 40097483. The reversal of 40097479 is 97479004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40097479 - 2⁹ = 40096967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40097489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20048739 + 20048740.

It is an arithmetic number, because the mean of its divisors is an integer number (20048740).

Almost surely, 2^40097479 is an apocalyptic number.

40097479 is a deficient number, since it is larger than the sum of its proper divisors (1).

40097479 is an equidigital number, since it uses as much as digits as its factorization.

40097479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 40097479 is about 6332.2570225789. The cubic root of 40097479 is about 342.2727752095.

It can be divided in two parts, 400 and 97479, that added together give a palindrome (97879).

The spelling of 40097479 in words is "forty million, ninety-seven thousand, four hundred seventy-nine".