139480454 has 16 divisors (see below), whose sum is σ = 215316816. Its totient is φ = 67716000.

The previous prime is 139480447. The next prime is 139480457. The reversal of 139480454 is 454084931.

It is a super-2 number, since 2×139480454² = 38909594096092232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139480457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40604 + ... + 43904.

It is an arithmetic number, because the mean of its divisors is an integer number (13457301).

Almost surely, 2^139480454 is an apocalyptic number.

139480454 is a deficient number, since it is larger than the sum of its proper divisors (75836362).

139480454 is a wasteful number, since it uses less digits than its factorization.

139480454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3911.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 139480454 is about 11810.1843338705. The cubic root of 139480454 is about 518.6062950470.

The spelling of 139480454 in words is "one hundred thirty-nine million, four hundred eighty thousand, four hundred fifty-four".