40139106 has 16 divisors (see below), whose sum is σ = 91746624. Its totient is φ = 11468304.

The previous prime is 40139101. The next prime is 40139107. The reversal of 40139106 is 60193104.

It is a super-2 number, since 2×40139106² = 3222295660958472, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40139101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 477805 + ... + 477888.

It is an arithmetic number, because the mean of its divisors is an integer number (5734164).

Almost surely, 2^40139106 is an apocalyptic number.

40139106 is an abundant number, since it is smaller than the sum of its proper divisors (51607518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40139106 is a wasteful number, since it uses less digits than its factorization.

40139106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955705.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 40139106 is about 6335.5430706452. The cubic root of 40139106 is about 342.3911771772.

The spelling of 40139106 in words is "forty million, one hundred thirty-nine thousand, one hundred six".