39413749 has 2 divisors, whose sum is σ = 39413750. Its totient is φ = 39413748.

The previous prime is 39413723. The next prime is 39413767. The reversal of 39413749 is 94731493.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23213124 + 16200625 = 4818^2 + 4025^2 .

It is an emirp because it is prime and its reverse (94731493) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39413749 - 2²⁵ = 5859317 is a prime.

It is a super-2 number, since 2×39413749² = 3106887220470002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39413779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19706874 + 19706875.

It is an arithmetic number, because the mean of its divisors is an integer number (19706875).

Almost surely, 2^39413749 is an apocalyptic number.

It is an amenable number.

39413749 is a deficient number, since it is larger than the sum of its proper divisors (1).

39413749 is an equidigital number, since it uses as much as digits as its factorization.

39413749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 40.

The square root of 39413749 is about 6278.0370339781. The cubic root of 39413749 is about 340.3161678404.

The spelling of 39413749 in words is "thirty-nine million, four hundred thirteen thousand, seven hundred forty-nine".