40426667 has 4 divisors (see below), whose sum is σ = 41820720. Its totient is φ = 39032616.

The previous prime is 40426637. The next prime is 40426669. The reversal of 40426667 is 76662404.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40426667 - 2⁸ = 40426411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40426669) 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, 696983 + ... + 697040.

It is an arithmetic number, because the mean of its divisors is an integer number (10455180).

Almost surely, 2^40426667 is an apocalyptic number.

40426667 is a deficient number, since it is larger than the sum of its proper divisors (1394053).

40426667 is a wasteful number, since it uses less digits than its factorization.

40426667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1394052.

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 40426667 is about 6358.1968355816. The cubic root of 40426667 is about 343.2068751192.

The spelling of 40426667 in words is "forty million, four hundred twenty-six thousand, six hundred sixty-seven".