39413893 has 2 divisors, whose sum is σ = 39413894. Its totient is φ = 39413892.

The previous prime is 39413887. The next prime is 39413897. The reversal of 39413893 is 39831493.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35796289 + 3617604 = 5983^2 + 1902^2 .

It is a cyclic number.

It is not a de Polignac number, because 39413893 - 2¹³ = 39405701 is a prime.

It is a super-2 number, since 2×39413893² = 3106909922830898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39413897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19706946 + 19706947.

It is an arithmetic number, because the mean of its divisors is an integer number (19706947).

Almost surely, 2^39413893 is an apocalyptic number.

It is an amenable number.

39413893 is a deficient number, since it is larger than the sum of its proper divisors (1).

39413893 is an equidigital number, since it uses as much as digits as its factorization.

39413893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 40.

The square root of 39413893 is about 6278.0485025205. The cubic root of 39413893 is about 340.3165822936.

The spelling of 39413893 in words is "thirty-nine million, four hundred thirteen thousand, eight hundred ninety-three".