40156455 has 8 divisors (see below), whose sum is σ = 64250352. Its totient is φ = 21416768.

The previous prime is 40156447. The next prime is 40156477. The reversal of 40156455 is 55465104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40156455 - 2³ = 40156447 is a prime.

It is a super-2 number, since 2×40156455² = 3225081756334050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1338534 + ... + 1338563.

It is an arithmetic number, because the mean of its divisors is an integer number (8031294).

Almost surely, 2^40156455 is an apocalyptic number.

40156455 is a deficient number, since it is larger than the sum of its proper divisors (24093897).

40156455 is a wasteful number, since it uses less digits than its factorization.

40156455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2677105.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 40156455 is about 6336.9121029094. The cubic root of 40156455 is about 342.4404997249.

The spelling of 40156455 in words is "forty million, one hundred fifty-six thousand, four hundred fifty-five".