40157479 has 2 divisors, whose sum is σ = 40157480. Its totient is φ = 40157478.

The previous prime is 40157461. The next prime is 40157501. The reversal of 40157479 is 97475104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40157479 - 2¹³ = 40149287 is a prime.

It is a super-2 number, since 2×40157479² = 3225246239270882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40157419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20078739 + 20078740.

It is an arithmetic number, because the mean of its divisors is an integer number (20078740).

Almost surely, 2^40157479 is an apocalyptic number.

40157479 is a deficient number, since it is larger than the sum of its proper divisors (1).

40157479 is an equidigital number, since it uses as much as digits as its factorization.

40157479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 40157479 is about 6336.9928988441. The cubic root of 40157479 is about 342.4434104740.

The spelling of 40157479 in words is "forty million, one hundred fifty-seven thousand, four hundred seventy-nine".