39970761 has 16 divisors (see below), whose sum is σ = 54312960. Its totient is φ = 26142480.

The previous prime is 39970759. The next prime is 39970769. The reversal of 39970761 is 16707993.

It is not a de Polignac number, because 39970761 - 2¹ = 39970759 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (39970769) 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, 44826 + ... + 45708.

It is an arithmetic number, because the mean of its divisors is an integer number (3394560).

Almost surely, 2^39970761 is an apocalyptic number.

It is an amenable number.

39970761 is a deficient number, since it is larger than the sum of its proper divisors (14342199).

39970761 is a wasteful number, since it uses less digits than its factorization.

39970761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156.

The product of its (nonzero) digits is 71442, while the sum is 42.

The square root of 39970761 is about 6322.2433518491. The cubic root of 39970761 is about 341.9118390452.

The spelling of 39970761 in words is "thirty-nine million, nine hundred seventy thousand, seven hundred sixty-one".