40135473 has 32 divisors (see below), whose sum is σ = 68908800. Its totient is φ = 22612608.

The previous prime is 40135471. The next prime is 40135493. The reversal of 40135473 is 37453104.

It is not a de Polignac number, because 40135473 - 2¹ = 40135471 is a prime.

It is a super-2 number, since 2×40135473² = 3221712385867458, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (40135471) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12343 + ... + 15251.

It is an arithmetic number, because the mean of its divisors is an integer number (2153400).

Almost surely, 2^40135473 is an apocalyptic number.

It is an amenable number.

40135473 is a deficient number, since it is larger than the sum of its proper divisors (28773327).

40135473 is a wasteful number, since it uses less digits than its factorization.

40135473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2998 (or 2992 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 40135473 is about 6335.2563484045. The cubic root of 40135473 is about 342.3808468966.

Adding to 40135473 its reverse (37453104), we get a palindrome (77588577).

The spelling of 40135473 in words is "forty million, one hundred thirty-five thousand, four hundred seventy-three".