39413887 has 2 divisors, whose sum is σ = 39413888. Its totient is φ = 39413886.

The previous prime is 39413879. The next prime is 39413893. The reversal of 39413887 is 78831493.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 39413887 - 2³ = 39413879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39413807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19706943 + 19706944.

It is an arithmetic number, because the mean of its divisors is an integer number (19706944).

Almost surely, 2^39413887 is an apocalyptic number.

39413887 is a deficient number, since it is larger than the sum of its proper divisors (1).

39413887 is an equidigital number, since it uses as much as digits as its factorization.

39413887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 43.

The square root of 39413887 is about 6278.0480246650. The cubic root of 39413887 is about 340.3165650248.

The spelling of 39413887 in words is "thirty-nine million, four hundred thirteen thousand, eight hundred eighty-seven".