40678479 has 24 divisors (see below), whose sum is σ = 61028864. Its totient is φ = 26082000.

The previous prime is 40678459. The next prime is 40678499. The reversal of 40678479 is 97487604.

It is an interprime number because it is at equal distance from previous prime (40678459) and next prime (40678499).

It is not a de Polignac number, because 40678479 - 2¹⁵ = 40645711 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 (40678409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58524 + ... + 59214.

Almost surely, 2^40678479 is an apocalyptic number.

40678479 is a deficient number, since it is larger than the sum of its proper divisors (20350385).

40678479 is a wasteful number, since it uses less digits than its factorization.

40678479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939 (or 936 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 40678479 is about 6377.9682501562. The cubic root of 40678479 is about 343.9179963854.

The spelling of 40678479 in words is "forty million, six hundred seventy-eight thousand, four hundred seventy-nine".