40464538 has 4 divisors (see below), whose sum is σ = 60696810. Its totient is φ = 20232268.

The previous prime is 40464503. The next prime is 40464553. The reversal of 40464538 is 83546404.

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

It can be written as a sum of positive squares in only one way, i.e., 33028009 + 7436529 = 5747^2 + 2727^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10116133 + ... + 10116136.

Almost surely, 2^40464538 is an apocalyptic number.

40464538 is a deficient number, since it is larger than the sum of its proper divisors (20232272).

40464538 is a wasteful number, since it uses less digits than its factorization.

40464538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20232271.

The product of its (nonzero) digits is 46080, while the sum is 34.

The square root of 40464538 is about 6361.1742626657. The cubic root of 40464538 is about 343.3140117529.

The spelling of 40464538 in words is "forty million, four hundred sixty-four thousand, five hundred thirty-eight".