39761997 has 16 divisors (see below), whose sum is σ = 61238592. Its totient is φ = 22680320.

The previous prime is 39761993. The next prime is 39761999. The reversal of 39761997 is 79916793.

It is a cyclic number.

It is not a de Polignac number, because 39761997 - 2² = 39761993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39761993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34878 + ... + 35999.

It is an arithmetic number, because the mean of its divisors is an integer number (3827412).

Almost surely, 2^39761997 is an apocalyptic number.

It is an amenable number.

39761997 is a deficient number, since it is larger than the sum of its proper divisors (21476595).

39761997 is a wasteful number, since it uses less digits than its factorization.

39761997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70908.

The product of its digits is 642978, while the sum is 51.

The square root of 39761997 is about 6305.7114586698. The cubic root of 39761997 is about 341.3155405518.

The spelling of 39761997 in words is "thirty-nine million, seven hundred sixty-one thousand, nine hundred ninety-seven".