Search a number
-
+
40495639 is a prime number
BaseRepresentation
bin1001101001111…
…0101000010111
32211012101120111
42122132220113
540331330024
64003543451
71001131042
oct232365027
984171514
1040495639
1120949a78
121168ab87
13850b322
145541c59
15384da94
hex269ea17

40495639 has 2 divisors, whose sum is σ = 40495640. Its totient is φ = 40495638.

The previous prime is 40495619. The next prime is 40495661. The reversal of 40495639 is 93659404.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40495639 - 25 = 40495607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40495619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20247819 + 20247820.

It is an arithmetic number, because the mean of its divisors is an integer number (20247820).

Almost surely, 240495639 is an apocalyptic number.

40495639 is a deficient number, since it is larger than the sum of its proper divisors (1).

40495639 is an equidigital number, since it uses as much as digits as its factorization.

40495639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 40495639 is about 6363.6183889357. The cubic root of 40495639 is about 343.4019461536.

The spelling of 40495639 in words is "forty million, four hundred ninety-five thousand, six hundred thirty-nine".